Consider the isoelectronic species, ${\mathrm{Na}}^{+}, {\mathrm{Mg}}^{2+}, {\mathrm{F}}^{-}, \mathrm{and} {\mathrm{O}}^{2-}$. The correct order of increasing length of their radii is

1. ${\mathrm{F}}^{-}<{\mathrm{O}}^{2-}<{\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}$

2. ${\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}<{\mathrm{F}}^{-}<{\mathrm{O}}^{2-}$

3. ${\mathrm{O}}^{2-}<{\mathrm{F}}^{-}<{\mathrm{Na}}^{+}<{\mathrm{Mg}}^{2+}$

4. ${\mathrm{O}}^{2-}<{\mathrm{F}}^{-}<{\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}$

The correct order of size of the given species is: 

1.  I > I^- > I⁺

2.  I⁺ > I^- > I

3.  I > I⁺ > I^-

4.  I^- > I > I⁺

Match the correct atomic radius with the corresponding element.

Codes

Given are the following sets of species:

(a) ${\mathrm{Zn}}^{2+}, {\mathrm{Ca}}^{2+}, {\mathrm{Ga}}^{3+}, {\mathrm{Al}}^{3+}$

(b) ${\mathrm{K}}^{+},\hspace{0.17em}{\mathrm{Ca}}^{2+}, {\mathrm{Sc}}^{3+},\hspace{0.17em}{\mathrm{Cl}}^{-}$

(c) ${\mathrm{P}}^{3-}, {\mathrm{S}}^{2-}, {\mathrm{Cl}}^{-}, {\mathrm{K}}^{+}$

(d) ${\mathrm{Ti}}^{4+}, \mathrm{Ar}, {\mathrm{Cr}}^{3+}, {\mathrm{V}}^{5+}$

The sets containing only isoelectronic ions among the above are:

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

In which following options of arrangement does not agree with the variation of the property indicated against it?

(a) Al³⁺<Mg²⁺<Na⁺<F^- (Increasing ionic size)

(b) B<C<N   (Increasing atomic size)

(c) I<Br<Cl (Increasing atomic size)

(d) Li<Na<K (Metallic character)

Choose the correct option

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

The ionic radii vary in-

Choose the correct option :

1. (a), (c)

2. (b), (c)

3. (c), (d)

4. (b), (d)