What is the family/group and electronic configuration of the recently discovered element with atomic number 114?

1.	\(\text { Carbon family },[ \mathrm{Rn}] 5 \mathrm{f}^{14} 6 \mathrm{~d}^{10} 7 \mathrm{~s}^2 7 \mathrm{p}^2\)
2.	\(\text { Oxygen family, }[\mathrm{Rn}] 5 \mathrm{f}^{14} 6 \mathrm{~d}^{10} 7 \mathrm{~s}^2 7 \mathrm{p}^4\)
3.	\(\text { Nitrogen family, }[\mathrm{Rn}] 5 \mathrm{f}^{14} 6 \mathrm{~d}^{10} 7 \mathrm{~s}^2 7 \mathrm{p}^6\)
4.	\(\text { Halogen family, }[\mathrm{Rn}] 5 \mathrm{f}^{14} 6 \mathrm{~d}^{10} 7 \mathrm{~s}^2 7 \mathrm{p}^5\)

Magnesium reacts with an element (X) that has a ground state electronic configuration of 1s²2s²2p³. What is the simplest formula for the ionic compound formed?

1. Mg₂X₃
2. MgX₂
3. Mg₂X
4. Mg₃X₂

The species Ar, K⁺ and Ca²⁺ contain the same number of electrons. In which order do their radii increase?

$1. \mathrm{Ar} < {\mathrm{K}}^{+} < {\mathrm{Ca}}^{2+}$
$2. {\mathrm{Ca}}^{2+} < \mathrm{Ar} < {\mathrm{K}}^{+}$
$3. {\mathrm{Ca}}^{2+} < {\mathrm{K}}^{+} < \mathrm{Ar}$
$4. {\mathrm{K}}^{+} <\hspace{0.17em}\mathrm{Ar} < {\mathrm{Ca}}^{2+}$

Which of the following orders of ionic radii is correctly represented?

1. $H^{-}>H^{+}>H$

2. $N{a}^{+}>F^{-}>O^{2-}$

3. $F^{-}>O^{2-}>N{a}^{+}$

4. $N^{3-}>M{g}^{2+}>A{l}^{3+}$

Identify the wrong statement among the following: 

1. Amongst isoelectronic species, the smaller the positive charge on the cation, the smaller the ionic radius.
2. Amongst isoelectronic species, the greater the negative charge on the anion, the larger is the ionic radius.
3. The atomic radius of the elements increases as one moves down the first group of the Periodic Table.
4. The atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the Periodic Table.

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl ?

1. Cl<F<O<S

2. O<S<F<Cl

3. F<S<O<Cl

4. S<O<Cl<F

 An amphoteric hydroxide among the following is : 

1.  $\mathrm{Be}{\left(\mathrm{OH}\right)}_2$

2.  $\mathrm{Sr}{\left(\mathrm{OH}\right)}_2$

3.  $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

4.  $\mathrm{Mg}{\left(\mathrm{OH}\right)}_2$

The element having electronic configuration [Kr]4d¹⁰4f¹⁴, 5s²5p⁶, 6s² belongs to:

1. s-block

2. p-block

3. d-block

4. f-block