Classification of Elements and Periodicity in Properties
89384
Which of the following elements represents highly electropositive as well as highly electronegative character in its period?
1 Hydrogen
2 Nitrogen
3 Fluorine
4 None
Explanation:
First period has $\mathrm{H}$ and $\mathrm{He}$ only, out of which $\mathrm{He}$ is inert, hence $\mathrm{H}$ behaves as a highly electropositive as well as electronegative element.
BITSAT-2007
Classification of Elements and Periodicity in Properties
89385
The group of elements in which the differentiating electron enters the antepenultimate shell of atoms are called
1 f -block elements
2 p-block elements
3 s-block elements
4 d-block elements
Explanation:
The group of elements in which the differentiating electron enters the antepenult-s timate shell of atoms are called f-block elements. Incase of inner transition elements i.e. f-block elements, the last three shell are namely valence, penultimate and penultimate and penultimate shell are incomplete. The inner transition elements the last shell contains two electrons and the penultimate shell may contain electron more than eight or nine and penultimate shell contains more than 18 upto 32 electrons.
J and K CET-(2007)
Classification of Elements and Periodicity in Properties
89389
Diagonal relationship is for:
1 $\mathrm{Li}-\mathrm{Na}$
2 $\mathrm{Be}-\mathrm{Mg}$
3 $\mathrm{Si}-\mathrm{C}$
4 $\mathrm{B}-\mathrm{Si}$
Explanation:
Diagonal relationships occur because of the direction in the trends of various properties as you move across or down the Periodic table. Many of the chemical properties of an element are related to the size of the atom. Diagonal relationship is$\mathrm{Li}$ and $\mathrm{Mg}, \mathrm{Be}$ and $\mathrm{Al}, \mathrm{B}$ and Si etc.
UPTU/UPSEE-2006
Classification of Elements and Periodicity in Properties
89391
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements give the correct picture?
1 The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
2 In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
3 Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
4 In alkali metals, the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Explanation:
In alkali metal, we move top to bottom in a group size increases thus, reactivity increases. But in halogen, the reactivity decrease due to decrease in electronegativity and decrease oxidizing ability due to the inert pair effect atomic radius increases from top to bottom in a group which less the attraction of valence electron of other atoms thus, decreasing reactivity.
(AIEEE-2006)
Classification of Elements and Periodicity in Properties
89397
The element with atomic number 12 belongs to -- group and --- period.
1 IA, third
2 III A, third
3 II A, third
4 II A, second
Explanation:
Given ${ }_{12} \mathrm{Z}=1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2$ The element is $\mathrm{Mg}$, it belongs to the IIA group and third period.
Classification of Elements and Periodicity in Properties
89384
Which of the following elements represents highly electropositive as well as highly electronegative character in its period?
1 Hydrogen
2 Nitrogen
3 Fluorine
4 None
Explanation:
First period has $\mathrm{H}$ and $\mathrm{He}$ only, out of which $\mathrm{He}$ is inert, hence $\mathrm{H}$ behaves as a highly electropositive as well as electronegative element.
BITSAT-2007
Classification of Elements and Periodicity in Properties
89385
The group of elements in which the differentiating electron enters the antepenultimate shell of atoms are called
1 f -block elements
2 p-block elements
3 s-block elements
4 d-block elements
Explanation:
The group of elements in which the differentiating electron enters the antepenult-s timate shell of atoms are called f-block elements. Incase of inner transition elements i.e. f-block elements, the last three shell are namely valence, penultimate and penultimate and penultimate shell are incomplete. The inner transition elements the last shell contains two electrons and the penultimate shell may contain electron more than eight or nine and penultimate shell contains more than 18 upto 32 electrons.
J and K CET-(2007)
Classification of Elements and Periodicity in Properties
89389
Diagonal relationship is for:
1 $\mathrm{Li}-\mathrm{Na}$
2 $\mathrm{Be}-\mathrm{Mg}$
3 $\mathrm{Si}-\mathrm{C}$
4 $\mathrm{B}-\mathrm{Si}$
Explanation:
Diagonal relationships occur because of the direction in the trends of various properties as you move across or down the Periodic table. Many of the chemical properties of an element are related to the size of the atom. Diagonal relationship is$\mathrm{Li}$ and $\mathrm{Mg}, \mathrm{Be}$ and $\mathrm{Al}, \mathrm{B}$ and Si etc.
UPTU/UPSEE-2006
Classification of Elements and Periodicity in Properties
89391
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements give the correct picture?
1 The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
2 In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
3 Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
4 In alkali metals, the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Explanation:
In alkali metal, we move top to bottom in a group size increases thus, reactivity increases. But in halogen, the reactivity decrease due to decrease in electronegativity and decrease oxidizing ability due to the inert pair effect atomic radius increases from top to bottom in a group which less the attraction of valence electron of other atoms thus, decreasing reactivity.
(AIEEE-2006)
Classification of Elements and Periodicity in Properties
89397
The element with atomic number 12 belongs to -- group and --- period.
1 IA, third
2 III A, third
3 II A, third
4 II A, second
Explanation:
Given ${ }_{12} \mathrm{Z}=1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2$ The element is $\mathrm{Mg}$, it belongs to the IIA group and third period.
Classification of Elements and Periodicity in Properties
89384
Which of the following elements represents highly electropositive as well as highly electronegative character in its period?
1 Hydrogen
2 Nitrogen
3 Fluorine
4 None
Explanation:
First period has $\mathrm{H}$ and $\mathrm{He}$ only, out of which $\mathrm{He}$ is inert, hence $\mathrm{H}$ behaves as a highly electropositive as well as electronegative element.
BITSAT-2007
Classification of Elements and Periodicity in Properties
89385
The group of elements in which the differentiating electron enters the antepenultimate shell of atoms are called
1 f -block elements
2 p-block elements
3 s-block elements
4 d-block elements
Explanation:
The group of elements in which the differentiating electron enters the antepenult-s timate shell of atoms are called f-block elements. Incase of inner transition elements i.e. f-block elements, the last three shell are namely valence, penultimate and penultimate and penultimate shell are incomplete. The inner transition elements the last shell contains two electrons and the penultimate shell may contain electron more than eight or nine and penultimate shell contains more than 18 upto 32 electrons.
J and K CET-(2007)
Classification of Elements and Periodicity in Properties
89389
Diagonal relationship is for:
1 $\mathrm{Li}-\mathrm{Na}$
2 $\mathrm{Be}-\mathrm{Mg}$
3 $\mathrm{Si}-\mathrm{C}$
4 $\mathrm{B}-\mathrm{Si}$
Explanation:
Diagonal relationships occur because of the direction in the trends of various properties as you move across or down the Periodic table. Many of the chemical properties of an element are related to the size of the atom. Diagonal relationship is$\mathrm{Li}$ and $\mathrm{Mg}, \mathrm{Be}$ and $\mathrm{Al}, \mathrm{B}$ and Si etc.
UPTU/UPSEE-2006
Classification of Elements and Periodicity in Properties
89391
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements give the correct picture?
1 The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
2 In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
3 Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
4 In alkali metals, the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Explanation:
In alkali metal, we move top to bottom in a group size increases thus, reactivity increases. But in halogen, the reactivity decrease due to decrease in electronegativity and decrease oxidizing ability due to the inert pair effect atomic radius increases from top to bottom in a group which less the attraction of valence electron of other atoms thus, decreasing reactivity.
(AIEEE-2006)
Classification of Elements and Periodicity in Properties
89397
The element with atomic number 12 belongs to -- group and --- period.
1 IA, third
2 III A, third
3 II A, third
4 II A, second
Explanation:
Given ${ }_{12} \mathrm{Z}=1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2$ The element is $\mathrm{Mg}$, it belongs to the IIA group and third period.
Classification of Elements and Periodicity in Properties
89384
Which of the following elements represents highly electropositive as well as highly electronegative character in its period?
1 Hydrogen
2 Nitrogen
3 Fluorine
4 None
Explanation:
First period has $\mathrm{H}$ and $\mathrm{He}$ only, out of which $\mathrm{He}$ is inert, hence $\mathrm{H}$ behaves as a highly electropositive as well as electronegative element.
BITSAT-2007
Classification of Elements and Periodicity in Properties
89385
The group of elements in which the differentiating electron enters the antepenultimate shell of atoms are called
1 f -block elements
2 p-block elements
3 s-block elements
4 d-block elements
Explanation:
The group of elements in which the differentiating electron enters the antepenult-s timate shell of atoms are called f-block elements. Incase of inner transition elements i.e. f-block elements, the last three shell are namely valence, penultimate and penultimate and penultimate shell are incomplete. The inner transition elements the last shell contains two electrons and the penultimate shell may contain electron more than eight or nine and penultimate shell contains more than 18 upto 32 electrons.
J and K CET-(2007)
Classification of Elements and Periodicity in Properties
89389
Diagonal relationship is for:
1 $\mathrm{Li}-\mathrm{Na}$
2 $\mathrm{Be}-\mathrm{Mg}$
3 $\mathrm{Si}-\mathrm{C}$
4 $\mathrm{B}-\mathrm{Si}$
Explanation:
Diagonal relationships occur because of the direction in the trends of various properties as you move across or down the Periodic table. Many of the chemical properties of an element are related to the size of the atom. Diagonal relationship is$\mathrm{Li}$ and $\mathrm{Mg}, \mathrm{Be}$ and $\mathrm{Al}, \mathrm{B}$ and Si etc.
UPTU/UPSEE-2006
Classification of Elements and Periodicity in Properties
89391
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements give the correct picture?
1 The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
2 In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
3 Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
4 In alkali metals, the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Explanation:
In alkali metal, we move top to bottom in a group size increases thus, reactivity increases. But in halogen, the reactivity decrease due to decrease in electronegativity and decrease oxidizing ability due to the inert pair effect atomic radius increases from top to bottom in a group which less the attraction of valence electron of other atoms thus, decreasing reactivity.
(AIEEE-2006)
Classification of Elements and Periodicity in Properties
89397
The element with atomic number 12 belongs to -- group and --- period.
1 IA, third
2 III A, third
3 II A, third
4 II A, second
Explanation:
Given ${ }_{12} \mathrm{Z}=1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2$ The element is $\mathrm{Mg}$, it belongs to the IIA group and third period.
Classification of Elements and Periodicity in Properties
89384
Which of the following elements represents highly electropositive as well as highly electronegative character in its period?
1 Hydrogen
2 Nitrogen
3 Fluorine
4 None
Explanation:
First period has $\mathrm{H}$ and $\mathrm{He}$ only, out of which $\mathrm{He}$ is inert, hence $\mathrm{H}$ behaves as a highly electropositive as well as electronegative element.
BITSAT-2007
Classification of Elements and Periodicity in Properties
89385
The group of elements in which the differentiating electron enters the antepenultimate shell of atoms are called
1 f -block elements
2 p-block elements
3 s-block elements
4 d-block elements
Explanation:
The group of elements in which the differentiating electron enters the antepenult-s timate shell of atoms are called f-block elements. Incase of inner transition elements i.e. f-block elements, the last three shell are namely valence, penultimate and penultimate and penultimate shell are incomplete. The inner transition elements the last shell contains two electrons and the penultimate shell may contain electron more than eight or nine and penultimate shell contains more than 18 upto 32 electrons.
J and K CET-(2007)
Classification of Elements and Periodicity in Properties
89389
Diagonal relationship is for:
1 $\mathrm{Li}-\mathrm{Na}$
2 $\mathrm{Be}-\mathrm{Mg}$
3 $\mathrm{Si}-\mathrm{C}$
4 $\mathrm{B}-\mathrm{Si}$
Explanation:
Diagonal relationships occur because of the direction in the trends of various properties as you move across or down the Periodic table. Many of the chemical properties of an element are related to the size of the atom. Diagonal relationship is$\mathrm{Li}$ and $\mathrm{Mg}, \mathrm{Be}$ and $\mathrm{Al}, \mathrm{B}$ and Si etc.
UPTU/UPSEE-2006
Classification of Elements and Periodicity in Properties
89391
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements give the correct picture?
1 The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
2 In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
3 Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
4 In alkali metals, the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Explanation:
In alkali metal, we move top to bottom in a group size increases thus, reactivity increases. But in halogen, the reactivity decrease due to decrease in electronegativity and decrease oxidizing ability due to the inert pair effect atomic radius increases from top to bottom in a group which less the attraction of valence electron of other atoms thus, decreasing reactivity.
(AIEEE-2006)
Classification of Elements and Periodicity in Properties
89397
The element with atomic number 12 belongs to -- group and --- period.
1 IA, third
2 III A, third
3 II A, third
4 II A, second
Explanation:
Given ${ }_{12} \mathrm{Z}=1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2$ The element is $\mathrm{Mg}$, it belongs to the IIA group and third period.
