Classification of Elements and Periodicity in Properties
89504
Of the following, the one with largest size is
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
$\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$ have isoelectronic species and each have $18 \mathrm{e}^{-}$. The size of atom decreases with increase in nuclear charge. The $\mathrm{Cl}^{-}$ion has the least nuclear charge among the given. Hence, it has largest size.
A.P.EAMCET 1997
Classification of Elements and Periodicity in Properties
89505
Which of the following, the one with largest size is:
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
Chloride ion has more ionic radius than $\mathrm{Ar}$, $\mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$. When the electrons are added in the outer most orbit, the attractive force of the nucleus on the electron decreases. So that after adding electron or in case of -ve ion the ionic radius increases.
AP - EAMCET - (Medical)-1997
Classification of Elements and Periodicity in Properties
89506
The pair of elements that have similar chemical properties are
1 beryllium and boron
2 aluminium and magnesium
3 carbon and nitrogen
4 lithium and magnesium
Explanation:
Lithium and magnesium are similar chemical properties, since they have same electronegativity. Lithium and magnesium show diagonal relationship.
A.P.EAMCET 1996
Classification of Elements and Periodicity in Properties
89411
Decreasing size of ions is :
1 I $>\mathrm{I}^{-}>\mathrm{I}^{+}$
2 $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
3 $\mathrm{I}^{+}>\mathrm{I}^{-}>\mathrm{I}$
4 I $>\mathrm{I}^{+}>\mathrm{I}^{-}$
Explanation:
When an atom added electron then the subshell are added and size is increases. When an atom are remove electron then subshell are removed and size is decrease. So, the decreasing order of size are $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
Classification of Elements and Periodicity in Properties
89504
Of the following, the one with largest size is
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
$\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$ have isoelectronic species and each have $18 \mathrm{e}^{-}$. The size of atom decreases with increase in nuclear charge. The $\mathrm{Cl}^{-}$ion has the least nuclear charge among the given. Hence, it has largest size.
A.P.EAMCET 1997
Classification of Elements and Periodicity in Properties
89505
Which of the following, the one with largest size is:
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
Chloride ion has more ionic radius than $\mathrm{Ar}$, $\mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$. When the electrons are added in the outer most orbit, the attractive force of the nucleus on the electron decreases. So that after adding electron or in case of -ve ion the ionic radius increases.
AP - EAMCET - (Medical)-1997
Classification of Elements and Periodicity in Properties
89506
The pair of elements that have similar chemical properties are
1 beryllium and boron
2 aluminium and magnesium
3 carbon and nitrogen
4 lithium and magnesium
Explanation:
Lithium and magnesium are similar chemical properties, since they have same electronegativity. Lithium and magnesium show diagonal relationship.
A.P.EAMCET 1996
Classification of Elements and Periodicity in Properties
89411
Decreasing size of ions is :
1 I $>\mathrm{I}^{-}>\mathrm{I}^{+}$
2 $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
3 $\mathrm{I}^{+}>\mathrm{I}^{-}>\mathrm{I}$
4 I $>\mathrm{I}^{+}>\mathrm{I}^{-}$
Explanation:
When an atom added electron then the subshell are added and size is increases. When an atom are remove electron then subshell are removed and size is decrease. So, the decreasing order of size are $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
Classification of Elements and Periodicity in Properties
89504
Of the following, the one with largest size is
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
$\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$ have isoelectronic species and each have $18 \mathrm{e}^{-}$. The size of atom decreases with increase in nuclear charge. The $\mathrm{Cl}^{-}$ion has the least nuclear charge among the given. Hence, it has largest size.
A.P.EAMCET 1997
Classification of Elements and Periodicity in Properties
89505
Which of the following, the one with largest size is:
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
Chloride ion has more ionic radius than $\mathrm{Ar}$, $\mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$. When the electrons are added in the outer most orbit, the attractive force of the nucleus on the electron decreases. So that after adding electron or in case of -ve ion the ionic radius increases.
AP - EAMCET - (Medical)-1997
Classification of Elements and Periodicity in Properties
89506
The pair of elements that have similar chemical properties are
1 beryllium and boron
2 aluminium and magnesium
3 carbon and nitrogen
4 lithium and magnesium
Explanation:
Lithium and magnesium are similar chemical properties, since they have same electronegativity. Lithium and magnesium show diagonal relationship.
A.P.EAMCET 1996
Classification of Elements and Periodicity in Properties
89411
Decreasing size of ions is :
1 I $>\mathrm{I}^{-}>\mathrm{I}^{+}$
2 $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
3 $\mathrm{I}^{+}>\mathrm{I}^{-}>\mathrm{I}$
4 I $>\mathrm{I}^{+}>\mathrm{I}^{-}$
Explanation:
When an atom added electron then the subshell are added and size is increases. When an atom are remove electron then subshell are removed and size is decrease. So, the decreasing order of size are $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
Classification of Elements and Periodicity in Properties
89504
Of the following, the one with largest size is
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
$\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$ have isoelectronic species and each have $18 \mathrm{e}^{-}$. The size of atom decreases with increase in nuclear charge. The $\mathrm{Cl}^{-}$ion has the least nuclear charge among the given. Hence, it has largest size.
A.P.EAMCET 1997
Classification of Elements and Periodicity in Properties
89505
Which of the following, the one with largest size is:
1 $\mathrm{Cl}^{-}$
2 $\mathrm{Ar}$
3 $\mathrm{K}^{+}$
4 $\mathrm{Ca}^{2+}$
Explanation:
Chloride ion has more ionic radius than $\mathrm{Ar}$, $\mathrm{K}^{+}$and $\mathrm{Ca}^{2+}$. When the electrons are added in the outer most orbit, the attractive force of the nucleus on the electron decreases. So that after adding electron or in case of -ve ion the ionic radius increases.
AP - EAMCET - (Medical)-1997
Classification of Elements and Periodicity in Properties
89506
The pair of elements that have similar chemical properties are
1 beryllium and boron
2 aluminium and magnesium
3 carbon and nitrogen
4 lithium and magnesium
Explanation:
Lithium and magnesium are similar chemical properties, since they have same electronegativity. Lithium and magnesium show diagonal relationship.
A.P.EAMCET 1996
Classification of Elements and Periodicity in Properties
89411
Decreasing size of ions is :
1 I $>\mathrm{I}^{-}>\mathrm{I}^{+}$
2 $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
3 $\mathrm{I}^{+}>\mathrm{I}^{-}>\mathrm{I}$
4 I $>\mathrm{I}^{+}>\mathrm{I}^{-}$
Explanation:
When an atom added electron then the subshell are added and size is increases. When an atom are remove electron then subshell are removed and size is decrease. So, the decreasing order of size are $\mathrm{I}^{-}>\mathrm{I}>\mathrm{I}^{+}$
