Classification of Elements and Periodicity in Properties
89628
When the first ionization energies are plotted against atomic number, the peaks are occupied by
1 Alkali metals
2 Rare gases
3 Halogens
4 Transition elements
Explanation:
Rare gases; as the electron is to be removed from stable configuration.
BITSAT 2013
Classification of Elements and Periodicity in Properties
89637
On adding $\mathrm{AlCl}_3$ to water
1 the ionisation of water increases
2 the ionisation of water decreases
3 the ionisation of water remains constant
4 the ionic product of water increases
Explanation:
$\mathrm{AlCl}_3$ gives $\mathrm{Al}^{3+}$ ions which combine with $\mathrm{OH}$ ions given by $\mathrm{H}_2 \mathrm{O}$ so that dissociation equilibrium of $\mathrm{H}_2 \mathrm{O}$ shifts in forward direction i.e. ionisation of water increases.
UP CPMT-2011
Classification of Elements and Periodicity in Properties
89638
Which one of $\mathrm{K}, \mathrm{I}, \mathrm{Cl}$ and $\mathrm{Li}$ will display the highest first ionisation energy?
1 $\mathrm{K}$
2 I
3 $\mathrm{Cl}$
4 $\mathrm{Li}$
Explanation:
On moving down a group the valence shell becomes for away from the nucleus and thus, nuclear attraction towards valence electron decreases which results in decreases in ionisation energy. Thus, chlorine has the highest first ionisation energy among all the given elements.
UPTU/UPSEE-2011
Classification of Elements and Periodicity in Properties
89643
Which of the following relation is correct?
1 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}>\mathrm{I}^{\text {st }}$ IE of $\mathrm{B}$
2 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}<\mathrm{I}^{\text {st }}$ IE of $B$
3 II $^{\text {nd }}$ IE of $\mathrm{C}>\mathrm{II}^{\text {st }}$ IE of $\mathrm{B}$
4 Both (b) and (c)
Explanation:
The electronic configuration of carbon is $1 \mathrm{~s}^2 2 \mathrm{~s}^2$ $2 \mathrm{p}^2$ and electronic configuration of boron is $1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^1$ If one electron is removed easily due to stable configurations. Ionisation energy is minimum but in carbon one electron is removed due to high ionisation energy.
JIPMER-2010
Classification of Elements and Periodicity in Properties
89645
Which of the following statement is correct about ionization potential?
1 It is independent of atomic radii.
2 It remains constant with change in atomic radii.
3 It increases with an increase in atomic radii.
4 It decreases with an increased in atomic radii.
Explanation:
The ionization energy is the energy to remove an electron from the neutral atom. On moving across a row with decrease in atomic radii. The ionization potential decreases with increase in atomic radii.
Classification of Elements and Periodicity in Properties
89628
When the first ionization energies are plotted against atomic number, the peaks are occupied by
1 Alkali metals
2 Rare gases
3 Halogens
4 Transition elements
Explanation:
Rare gases; as the electron is to be removed from stable configuration.
BITSAT 2013
Classification of Elements and Periodicity in Properties
89637
On adding $\mathrm{AlCl}_3$ to water
1 the ionisation of water increases
2 the ionisation of water decreases
3 the ionisation of water remains constant
4 the ionic product of water increases
Explanation:
$\mathrm{AlCl}_3$ gives $\mathrm{Al}^{3+}$ ions which combine with $\mathrm{OH}$ ions given by $\mathrm{H}_2 \mathrm{O}$ so that dissociation equilibrium of $\mathrm{H}_2 \mathrm{O}$ shifts in forward direction i.e. ionisation of water increases.
UP CPMT-2011
Classification of Elements and Periodicity in Properties
89638
Which one of $\mathrm{K}, \mathrm{I}, \mathrm{Cl}$ and $\mathrm{Li}$ will display the highest first ionisation energy?
1 $\mathrm{K}$
2 I
3 $\mathrm{Cl}$
4 $\mathrm{Li}$
Explanation:
On moving down a group the valence shell becomes for away from the nucleus and thus, nuclear attraction towards valence electron decreases which results in decreases in ionisation energy. Thus, chlorine has the highest first ionisation energy among all the given elements.
UPTU/UPSEE-2011
Classification of Elements and Periodicity in Properties
89643
Which of the following relation is correct?
1 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}>\mathrm{I}^{\text {st }}$ IE of $\mathrm{B}$
2 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}<\mathrm{I}^{\text {st }}$ IE of $B$
3 II $^{\text {nd }}$ IE of $\mathrm{C}>\mathrm{II}^{\text {st }}$ IE of $\mathrm{B}$
4 Both (b) and (c)
Explanation:
The electronic configuration of carbon is $1 \mathrm{~s}^2 2 \mathrm{~s}^2$ $2 \mathrm{p}^2$ and electronic configuration of boron is $1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^1$ If one electron is removed easily due to stable configurations. Ionisation energy is minimum but in carbon one electron is removed due to high ionisation energy.
JIPMER-2010
Classification of Elements and Periodicity in Properties
89645
Which of the following statement is correct about ionization potential?
1 It is independent of atomic radii.
2 It remains constant with change in atomic radii.
3 It increases with an increase in atomic radii.
4 It decreases with an increased in atomic radii.
Explanation:
The ionization energy is the energy to remove an electron from the neutral atom. On moving across a row with decrease in atomic radii. The ionization potential decreases with increase in atomic radii.
Classification of Elements and Periodicity in Properties
89628
When the first ionization energies are plotted against atomic number, the peaks are occupied by
1 Alkali metals
2 Rare gases
3 Halogens
4 Transition elements
Explanation:
Rare gases; as the electron is to be removed from stable configuration.
BITSAT 2013
Classification of Elements and Periodicity in Properties
89637
On adding $\mathrm{AlCl}_3$ to water
1 the ionisation of water increases
2 the ionisation of water decreases
3 the ionisation of water remains constant
4 the ionic product of water increases
Explanation:
$\mathrm{AlCl}_3$ gives $\mathrm{Al}^{3+}$ ions which combine with $\mathrm{OH}$ ions given by $\mathrm{H}_2 \mathrm{O}$ so that dissociation equilibrium of $\mathrm{H}_2 \mathrm{O}$ shifts in forward direction i.e. ionisation of water increases.
UP CPMT-2011
Classification of Elements and Periodicity in Properties
89638
Which one of $\mathrm{K}, \mathrm{I}, \mathrm{Cl}$ and $\mathrm{Li}$ will display the highest first ionisation energy?
1 $\mathrm{K}$
2 I
3 $\mathrm{Cl}$
4 $\mathrm{Li}$
Explanation:
On moving down a group the valence shell becomes for away from the nucleus and thus, nuclear attraction towards valence electron decreases which results in decreases in ionisation energy. Thus, chlorine has the highest first ionisation energy among all the given elements.
UPTU/UPSEE-2011
Classification of Elements and Periodicity in Properties
89643
Which of the following relation is correct?
1 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}>\mathrm{I}^{\text {st }}$ IE of $\mathrm{B}$
2 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}<\mathrm{I}^{\text {st }}$ IE of $B$
3 II $^{\text {nd }}$ IE of $\mathrm{C}>\mathrm{II}^{\text {st }}$ IE of $\mathrm{B}$
4 Both (b) and (c)
Explanation:
The electronic configuration of carbon is $1 \mathrm{~s}^2 2 \mathrm{~s}^2$ $2 \mathrm{p}^2$ and electronic configuration of boron is $1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^1$ If one electron is removed easily due to stable configurations. Ionisation energy is minimum but in carbon one electron is removed due to high ionisation energy.
JIPMER-2010
Classification of Elements and Periodicity in Properties
89645
Which of the following statement is correct about ionization potential?
1 It is independent of atomic radii.
2 It remains constant with change in atomic radii.
3 It increases with an increase in atomic radii.
4 It decreases with an increased in atomic radii.
Explanation:
The ionization energy is the energy to remove an electron from the neutral atom. On moving across a row with decrease in atomic radii. The ionization potential decreases with increase in atomic radii.
Classification of Elements and Periodicity in Properties
89628
When the first ionization energies are plotted against atomic number, the peaks are occupied by
1 Alkali metals
2 Rare gases
3 Halogens
4 Transition elements
Explanation:
Rare gases; as the electron is to be removed from stable configuration.
BITSAT 2013
Classification of Elements and Periodicity in Properties
89637
On adding $\mathrm{AlCl}_3$ to water
1 the ionisation of water increases
2 the ionisation of water decreases
3 the ionisation of water remains constant
4 the ionic product of water increases
Explanation:
$\mathrm{AlCl}_3$ gives $\mathrm{Al}^{3+}$ ions which combine with $\mathrm{OH}$ ions given by $\mathrm{H}_2 \mathrm{O}$ so that dissociation equilibrium of $\mathrm{H}_2 \mathrm{O}$ shifts in forward direction i.e. ionisation of water increases.
UP CPMT-2011
Classification of Elements and Periodicity in Properties
89638
Which one of $\mathrm{K}, \mathrm{I}, \mathrm{Cl}$ and $\mathrm{Li}$ will display the highest first ionisation energy?
1 $\mathrm{K}$
2 I
3 $\mathrm{Cl}$
4 $\mathrm{Li}$
Explanation:
On moving down a group the valence shell becomes for away from the nucleus and thus, nuclear attraction towards valence electron decreases which results in decreases in ionisation energy. Thus, chlorine has the highest first ionisation energy among all the given elements.
UPTU/UPSEE-2011
Classification of Elements and Periodicity in Properties
89643
Which of the following relation is correct?
1 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}>\mathrm{I}^{\text {st }}$ IE of $\mathrm{B}$
2 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}<\mathrm{I}^{\text {st }}$ IE of $B$
3 II $^{\text {nd }}$ IE of $\mathrm{C}>\mathrm{II}^{\text {st }}$ IE of $\mathrm{B}$
4 Both (b) and (c)
Explanation:
The electronic configuration of carbon is $1 \mathrm{~s}^2 2 \mathrm{~s}^2$ $2 \mathrm{p}^2$ and electronic configuration of boron is $1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^1$ If one electron is removed easily due to stable configurations. Ionisation energy is minimum but in carbon one electron is removed due to high ionisation energy.
JIPMER-2010
Classification of Elements and Periodicity in Properties
89645
Which of the following statement is correct about ionization potential?
1 It is independent of atomic radii.
2 It remains constant with change in atomic radii.
3 It increases with an increase in atomic radii.
4 It decreases with an increased in atomic radii.
Explanation:
The ionization energy is the energy to remove an electron from the neutral atom. On moving across a row with decrease in atomic radii. The ionization potential decreases with increase in atomic radii.
Classification of Elements and Periodicity in Properties
89628
When the first ionization energies are plotted against atomic number, the peaks are occupied by
1 Alkali metals
2 Rare gases
3 Halogens
4 Transition elements
Explanation:
Rare gases; as the electron is to be removed from stable configuration.
BITSAT 2013
Classification of Elements and Periodicity in Properties
89637
On adding $\mathrm{AlCl}_3$ to water
1 the ionisation of water increases
2 the ionisation of water decreases
3 the ionisation of water remains constant
4 the ionic product of water increases
Explanation:
$\mathrm{AlCl}_3$ gives $\mathrm{Al}^{3+}$ ions which combine with $\mathrm{OH}$ ions given by $\mathrm{H}_2 \mathrm{O}$ so that dissociation equilibrium of $\mathrm{H}_2 \mathrm{O}$ shifts in forward direction i.e. ionisation of water increases.
UP CPMT-2011
Classification of Elements and Periodicity in Properties
89638
Which one of $\mathrm{K}, \mathrm{I}, \mathrm{Cl}$ and $\mathrm{Li}$ will display the highest first ionisation energy?
1 $\mathrm{K}$
2 I
3 $\mathrm{Cl}$
4 $\mathrm{Li}$
Explanation:
On moving down a group the valence shell becomes for away from the nucleus and thus, nuclear attraction towards valence electron decreases which results in decreases in ionisation energy. Thus, chlorine has the highest first ionisation energy among all the given elements.
UPTU/UPSEE-2011
Classification of Elements and Periodicity in Properties
89643
Which of the following relation is correct?
1 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}>\mathrm{I}^{\text {st }}$ IE of $\mathrm{B}$
2 $\mathrm{I}^{\text {st }}$ IE of $\mathrm{C}<\mathrm{I}^{\text {st }}$ IE of $B$
3 II $^{\text {nd }}$ IE of $\mathrm{C}>\mathrm{II}^{\text {st }}$ IE of $\mathrm{B}$
4 Both (b) and (c)
Explanation:
The electronic configuration of carbon is $1 \mathrm{~s}^2 2 \mathrm{~s}^2$ $2 \mathrm{p}^2$ and electronic configuration of boron is $1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^1$ If one electron is removed easily due to stable configurations. Ionisation energy is minimum but in carbon one electron is removed due to high ionisation energy.
JIPMER-2010
Classification of Elements and Periodicity in Properties
89645
Which of the following statement is correct about ionization potential?
1 It is independent of atomic radii.
2 It remains constant with change in atomic radii.
3 It increases with an increase in atomic radii.
4 It decreases with an increased in atomic radii.
Explanation:
The ionization energy is the energy to remove an electron from the neutral atom. On moving across a row with decrease in atomic radii. The ionization potential decreases with increase in atomic radii.
