The IUPAC symbol for the element with atomic number 119 would be:

1.	Uue	2.	Une
3.	Uun	4.	Unh

The isoelectronic set of ions is :

1. $F^{-},<mspace\; width="1em"></mspace>L{i}^{+},<mspace\; width="1em"></mspace>N{a}^{+}<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>M{g}^{2+}$

2. $L{i}^{+},<mspace\; width="1em"></mspace>N{a}^{+},<mspace\; width="1em"></mspace>O^{2-}<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>F^{-}$

3. $N^{3-},<mspace\; width="1em"></mspace>O^{2-},<mspace\; width="1em"></mspace>F^{-}<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>N{a}^{+}$

4. $N^{3-},<mspace\; width="1em"></mspace>L{i}^{+},<mspace\; width="1em"></mspace>M{g}^{2+}<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>O^{2-}$

The element having a greatest difference between its first and second ionization energies, is:

1.  Ca 

2.  Sc

3.  K 

4.  Ba  

The group number, number of valence electrons, and valency of an element with atomic number 15,
respectively, are:

1. 16, 6 and 3
2. 15, 6 and 12
3. 16, 5 and 2
4. 15, 5 and 3

The elements with atomic number 101 and 104 belong to, respectively:
1. Actinoids and Group 6
2. Actinoids and Group 4
3. Group 11 and Group 4
4. Group 6 and Actinoids

The ionic radii of  O^2-,  F^-, Na⁺ , and Mg²⁺  are in the order of: 

1. \(\mathrm{O}^{2-}>\mathrm{F}^{-}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}\)

2. \(\mathrm{Mg}^{2+}>\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{O}^{2-}\)

3. \(\mathrm{F}^{-}>\mathrm{O}^{2-}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}\)

4. \(\mathrm{O}^{2-}>\mathrm{F}^{-}>\mathrm{Mg}^{2+}>\mathrm{Na}^{+}\)

The correct order of the ionic radii of  O^2- , N^3- ,F^- ,Mg²⁺ , Na⁺ and Al³⁺   is : 

1.  \(\mathrm{Al}^{3+}<\mathrm{Na}^{+}<\mathrm{Mg}^{2+}<\mathrm{O}^{2-}<\mathrm{F}^{-}<\mathrm{N}^{3-}\)

2.  \(\mathrm{N}^{3-}<\mathrm{O}^{2-}<\mathrm{F}^{-}<\mathrm{Na}^{+}<\mathrm{Mg}^{2+}<\mathrm{Al}^{3+}\)

3.  \(\mathrm{Al}^{3+}<\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}<\mathrm{O}^{2-}<\mathrm{N}^{3-}\)

4.  \(\mathrm{N}^{3-}<\mathrm{F}^{-}<\mathrm{O}^{2-}<\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{Al}^{3+}\)

Consider the elements Mg, Al, S, P, and Si, the correct increasing order of their first ionization enthalpy is:

1. Mg < Al < Si < S < P

2. Al < Mg < Si < S < P

3. Mg < Al < Si < P < S

4. Al < Mg < S < Si < P

Consider the following compounds:

BeO, BaO, Be(OH)₂, Sr(OH)₂

The amphoteric compound(s) are:

The set that contains atomic numbers of only transition elements is:

1. 21, 32, 53, 64

2. 9, 17, 34, 38

3. 21, 25, 42, 72

4. 37, 42, 50, 64