As negative charge of ions increases, outer electron will be at a greater distance from the nucleus, hence the greater in size. The order of size of given ions is $\mathrm{O}^{2-}>\mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{F}$.
SRMJEEE - 2007
Classification of Elements and Periodicity in Properties
89486
Increase in atomic size down the group is due to
1 increase in number of electrons
2 increase in number of protons and neutrons
3 increase in number of protons
4 increase in number of protons, neutrons and electrons
Explanation:
In a given group, atomic size increases due to addition of extra shell which outweighs the effect of increased nuclear charge. Number of electron increase with increases in addition of extra shell. Hence, increase in atomic size down the group is due to increase in number of electron.
UP CPMT-2007
Classification of Elements and Periodicity in Properties
89487
Which of the following has largest ionic radius?
1 $\mathrm{Cs}^{+}$
2 $\mathrm{Li}^{+}$
3 $\mathrm{Na}^{+}$
4 $\mathrm{K}^{+}$
Explanation:
Atomic and ionic radii increase from top to bottom in a group due to adding of shell at every step. Therefore, $\mathrm{Cs}^{+}$ion has largest ionic radius among the given ions.
BCECE-2006
Classification of Elements and Periodicity in Properties
89502
Of the metals Be, Mg, Ca and Sr of group 2 in the periodic table, the least ionic chloride will be formed by
1 $\mathrm{Be}$
2 $\mathrm{Ca}$
3 $\mathrm{Mg} \quad$
4 $\mathrm{Sr}$
Explanation:
Beryllium chlorides are covalent in nature. This is due to the small size and high charge density of $\mathrm{Be}^{2+}$ ion i.e., it has high polarising power. However, the halides of the other alkaline earth metals are ionic solids.
As negative charge of ions increases, outer electron will be at a greater distance from the nucleus, hence the greater in size. The order of size of given ions is $\mathrm{O}^{2-}>\mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{F}$.
SRMJEEE - 2007
Classification of Elements and Periodicity in Properties
89486
Increase in atomic size down the group is due to
1 increase in number of electrons
2 increase in number of protons and neutrons
3 increase in number of protons
4 increase in number of protons, neutrons and electrons
Explanation:
In a given group, atomic size increases due to addition of extra shell which outweighs the effect of increased nuclear charge. Number of electron increase with increases in addition of extra shell. Hence, increase in atomic size down the group is due to increase in number of electron.
UP CPMT-2007
Classification of Elements and Periodicity in Properties
89487
Which of the following has largest ionic radius?
1 $\mathrm{Cs}^{+}$
2 $\mathrm{Li}^{+}$
3 $\mathrm{Na}^{+}$
4 $\mathrm{K}^{+}$
Explanation:
Atomic and ionic radii increase from top to bottom in a group due to adding of shell at every step. Therefore, $\mathrm{Cs}^{+}$ion has largest ionic radius among the given ions.
BCECE-2006
Classification of Elements and Periodicity in Properties
89502
Of the metals Be, Mg, Ca and Sr of group 2 in the periodic table, the least ionic chloride will be formed by
1 $\mathrm{Be}$
2 $\mathrm{Ca}$
3 $\mathrm{Mg} \quad$
4 $\mathrm{Sr}$
Explanation:
Beryllium chlorides are covalent in nature. This is due to the small size and high charge density of $\mathrm{Be}^{2+}$ ion i.e., it has high polarising power. However, the halides of the other alkaline earth metals are ionic solids.
As negative charge of ions increases, outer electron will be at a greater distance from the nucleus, hence the greater in size. The order of size of given ions is $\mathrm{O}^{2-}>\mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{F}$.
SRMJEEE - 2007
Classification of Elements and Periodicity in Properties
89486
Increase in atomic size down the group is due to
1 increase in number of electrons
2 increase in number of protons and neutrons
3 increase in number of protons
4 increase in number of protons, neutrons and electrons
Explanation:
In a given group, atomic size increases due to addition of extra shell which outweighs the effect of increased nuclear charge. Number of electron increase with increases in addition of extra shell. Hence, increase in atomic size down the group is due to increase in number of electron.
UP CPMT-2007
Classification of Elements and Periodicity in Properties
89487
Which of the following has largest ionic radius?
1 $\mathrm{Cs}^{+}$
2 $\mathrm{Li}^{+}$
3 $\mathrm{Na}^{+}$
4 $\mathrm{K}^{+}$
Explanation:
Atomic and ionic radii increase from top to bottom in a group due to adding of shell at every step. Therefore, $\mathrm{Cs}^{+}$ion has largest ionic radius among the given ions.
BCECE-2006
Classification of Elements and Periodicity in Properties
89502
Of the metals Be, Mg, Ca and Sr of group 2 in the periodic table, the least ionic chloride will be formed by
1 $\mathrm{Be}$
2 $\mathrm{Ca}$
3 $\mathrm{Mg} \quad$
4 $\mathrm{Sr}$
Explanation:
Beryllium chlorides are covalent in nature. This is due to the small size and high charge density of $\mathrm{Be}^{2+}$ ion i.e., it has high polarising power. However, the halides of the other alkaline earth metals are ionic solids.
As negative charge of ions increases, outer electron will be at a greater distance from the nucleus, hence the greater in size. The order of size of given ions is $\mathrm{O}^{2-}>\mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{F}$.
SRMJEEE - 2007
Classification of Elements and Periodicity in Properties
89486
Increase in atomic size down the group is due to
1 increase in number of electrons
2 increase in number of protons and neutrons
3 increase in number of protons
4 increase in number of protons, neutrons and electrons
Explanation:
In a given group, atomic size increases due to addition of extra shell which outweighs the effect of increased nuclear charge. Number of electron increase with increases in addition of extra shell. Hence, increase in atomic size down the group is due to increase in number of electron.
UP CPMT-2007
Classification of Elements and Periodicity in Properties
89487
Which of the following has largest ionic radius?
1 $\mathrm{Cs}^{+}$
2 $\mathrm{Li}^{+}$
3 $\mathrm{Na}^{+}$
4 $\mathrm{K}^{+}$
Explanation:
Atomic and ionic radii increase from top to bottom in a group due to adding of shell at every step. Therefore, $\mathrm{Cs}^{+}$ion has largest ionic radius among the given ions.
BCECE-2006
Classification of Elements and Periodicity in Properties
89502
Of the metals Be, Mg, Ca and Sr of group 2 in the periodic table, the least ionic chloride will be formed by
1 $\mathrm{Be}$
2 $\mathrm{Ca}$
3 $\mathrm{Mg} \quad$
4 $\mathrm{Sr}$
Explanation:
Beryllium chlorides are covalent in nature. This is due to the small size and high charge density of $\mathrm{Be}^{2+}$ ion i.e., it has high polarising power. However, the halides of the other alkaline earth metals are ionic solids.
