Periodic Classification Quiz No:7

Question No:1

Oxide that is most acidic

[A] Cl2O7

[B] SO3

[C] P4O10

[D] N2O5

Question No:2

Generally the nature of non-metal oxides is

[A] Basic

[B] Acidic

[C] Amphoteric

[D] Neutral

Question No:3

The outermost electronic configuration of most electropositive element is

[A] ns1

[B] ns2 np2

[C] ns2 np3

[D] ns2 np5

Question No:4

The most electropositive element is

[A] 1

[B] Mg

[C] Cs

[D] Li

Question No:5

The tendency of an element to lose an electron is called

[A] Electronegativity

[B] Non-metallic character

[C] Electropositive character

[D] Electron affinity

Question No:6

Nature of Sb4O6 is

[A] Acidic

[B] Neutral

[C] Basic

[D] Amphoteric

Question No:7

Chemical similarity between B and Al is due to

[A] Diagonal relationship

[B] Both belong to same period

[C] Similar outer electronic configuration

[D] Inert pair effect

Question No:8

Pair of ions with similar ionic radii

[A] Li+,Mg2+

[B] Li+,Na+

[C] Mg2+, Ca2+

[D] Mg2+, K+

Question No:9

Among the following pairs of elements, the pair that is different from others is

[A] Lithium and Magnesium

[B] Nitrogen and Phosphorus

[C] Beryllium and Aluminium

[D] Boron and Silicon

Question No:10

An element X belongs to fourth period and fifteenth group of the periodic table. Which one of the following is true regarding the outer electronic configuration of X ? It has

[A] partially filled d-orbitals and completely filled s-orbitals

[B] completely filled s-orbital and completely filled p-orbitals

[C] completely filled s-orbital and half-filled p-orbitals

[D] half-filled d-orbitals and completely filled s-orbitals

Question No:11

Identify the wrong statement in the following :

[A] Among isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

[B] Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius.

[C] Atomic radius of the elements increases as one moves down the first group of the periodic table.

[D] Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table.

Question No:12

The correct sequence which shows decreasing order of the ionic radii of the element is

[A] O2- > F > Na+> Mg2+> Al3+

[B] Al3+> Mg2+> Na+> F> O2-

[C] Na+ >Mg2+> Al3+ > O2- > F

[D] Na+ > F > Mg2+ > O2-> Al3+

Question No:13

The increasing order of the first ionization enthalpy of the elements B, P, S and F (lowest first) is

[A] B

Question No:14

It is because of inability of ns2 electrons of the valence shell to participate in bonding that

[A] Sn2+ is reducing while Pb4+ is oxidising

[B] Sn2+ is oxidising while Pb4+ is reducing

[C] Sn2+ and Pb2+ are both oxidising and reducing

[D] Sn4+ is reducing while Pb4+ is oxidising

Question No:15

The reason for greater range of oxidation states in actinoids is attributed to

[A] The radioactive nature of actinoids

[B] Actinoid contraction

[C] 5f,6d and 7s levels having comparable energies

[D] 4f and 5d levels being close in energies

Question No:16

The element Z = 114 has been discovered recently. It will belong to which of the following family group and electronic configuration ?

[A] Halogen family[ Rn ]5f146d107s27p5

[B] Carbon family [Rn] 5f’46d107s27p2

[C] Oxygen family [Rn] 5f146d107s27p4

[D] Nitrogen family [Rn] 5f146d107s27p6

Question No:17

An element has Ar3d1 configuration in its +2 oxidation state. Its position in the periodic table is

[A] period-3,group-3

[B] period-3, group-7

[C] period-4, group-3

[D] period-3, group-9

Question No:18

Which of the following statements is correct about halogens ?

[A] They are all capable of exhibiting more than one oxidation states

[B] Thjey are all diatomic and form diatomic ions

[C] They are all diatomic and form univalent ions

[D] They are all reducing agents

Question No:19

Which one of the following sets of ions have same outershell electronic configuration?

[A] Cr3+, Mn3+, Fe2+

[B] Cr+, Mn3+, Fe3+

[C] Cr3+, Mn2+, Fe2+

[D] Cr+, Mn2+, Fe3+

Question No:20

The electronic configuration of 59Pr (praseodymium) is

[A] 54Xe4f25D16s2

[B] 54Xe4f15d26s2

[C] 54Xe4f36s2

[D] 54Xe4f35d2