Periodic Classification Quiz No:12

Question No:1

In a period of representative elements, the decrease in ionic radius when compared with the corresponding decrease in atomic radius

[A] is equal

[B] is less

[C] is more

[D] Cannot be predicted

Question No:2

In which of the following sets, elements have nearly same atomic radii?

[A] Li, Be, B

[B] Mg, Ca, Sr

[C] Fe, Co, Ni

[D] O, S, Se

Question No:3

Correct order of atomic radii is

[A] N

Question No:4

If an element ‘X’ is assumed to have the types of radii, then their order is

[A] Crystal radius > Van der waals radius > Covalent radius

[B] Van der waals radius > Crystal radius > Covalent radius

[C] Covalent radius > Crystal radius > Van der waals radius

[D] Van der waals radius > Covalent radius > Crystal radius

Question No:5

Which of the following has smallest radius?

[A] Be+2

[B] LiZ+

[C] O-2

[D] F

Question No:6

Which of the following series of elements have most nearly the same atomic radius ?

[A] Mg, Ca, Sr, Ba

[B] Ca, Ge, As, Se

[C] B, C, N, O

[D] Cr, Mn, Fe, Co

Question No:7

If ionisation potential (I.P.) of Na is 5.48 eV. The I.P. of K will be

[A] 4.34 eV

[B] 5.68 eV

[C] 10.88 eV

[D] 5.48 eV

Question No:8

A sudden jump between the values of second and third ionisation energies of an element is associated with configuration

[A] 1S2,2S2,2P6,3S1

[B] 1S2,2S2,2P6,3S2,3p1

[C] 1S2,2S2,2P6,3S2,3p2

[D] 1S2,2S2,2P6,3S2

Question No:9

Amongst the following elements (whose electronic configurations are given below), the one having the highest first ionization energy is

[A] [Ne]3s2,3P1

[B] [Ne]3s2 , 3p3

[C] [Ne]3s2, 3p2

[D] [Ar]3d10, 4S2, 4p2

Question No:10

The first ionization energy of Lithium will be

[A] Greater than Be

[B] Less than Be

[C] Equal to that of Na

[D] Equal to that of F

Question No:11

A sudden jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration

[A] 1s2, 2s2, 2p6, 3s2, 3p2

[B] 1s2, 2s2, 2p6, 3s2

[C] 1s2, 2s2, 2p6, 3s2, 3p2

[D] 1s2, 2s2, 2p6, 3s1

Question No:12

Generally the ionisation potential in a period increases, but there are some exceptions. The one which is not an exception is

[A] Be&B

[B] N&O

[C] Mg&Al

[D] Na & Mg

Question No:13

Element that has the highest first ionisation energy among the following is

[A] Ca

[B] Mg

[C] Al

[D] Si

Question No:14

The ionization potential of nitrogen is more than that of oxygen because of

[A] the greater attraction of the electrons by the nucleus

[B] the extra stability of the half filled p – orbitals

[C] the smaller size of nitrogen

[D] more penetration effect

Question No:15

Which element has the greatest tendency to lose electrons ?

[A] F

[B] S

[C] Fe

[D] Be

Question No:16

Second ionisation potential of oxygen is

[A] Equal to that of fluorine

[B] Less than that of fluorine

[C] Greater than that of fluorine

[D] Half of that of fluorine

Question No:17

Among the elements A, B, C and D having atomic numbers 9, 10, 11 and 12 respectively the correct order of ionisation energies is

[A] A>B>C>D

[B] B>A>D>C

[C] B>A>C>D

[D] D>C>B>A

Question No:18

In which of the following process maximum energy is released

[A] O(g) + e – -> O(g)

[B] O(g) + e — > O-2(g)

[C] S(g) + e — > S(g)

[D] S(g) + e — > S-2 (g)

Question No:19

Ionisation energy of F is equal in magnitude with the electron affinity of

[A] F

[B] F

[C] F+

[D] F2+

Question No:20

When an electron is added, energy is absorbed in which of the following?

[A] C

[B] N

[C] F

[D] O