Question No:1
Among chalcogens electron affinity is highest for
[A] O
[B] S
[C] Se
[D] Te
Question No:2
The element with highest electron affinity is
[A] Fluorine
[B] Cesium
[C] Helium
[D] Chlorine
Question No:3
Incorrect statement is
[A] Fluorine has the highest electron affinity
[B] Greater the nuclear charge, greater is the electron affinity
[C] The electron affinity of Nitrogen is positive (energy is absorbed)
[D] Chlorine has highest electron affinity
Question No:4
The electron affinity values of elements A, B, C and D are respectively -135, -60, -200 and -348kJ mol–1. The outer electronic configuration of element B is
[A] I)3s23p5
[B] 3s23p4
[C] 3s23p3
[D] 3s2 3p21
Question No:5
Pauling’s Electronegativity is based on
[A] Electron affinity
[B] lonisation potential
[C] Both IP and EA
[D] Bond energies
Question No:6
Pauling’s electronegativity values for elements are useful in predicting
[A] Polarity of the molecules
[B] Position in the E.M.F. series
[C] Coordination numbers
[D] Dipole moments
Question No:7
Electronegativity of an element is the average of its ionisation energy and electron affinity according to
[A] Pauling
[B] Rutherford
[C] Bohr
[D] Mulliken
Question No:8
Correct relation among XA, XB and, where XA and XB are the electronegativities of elements A and B
[A] XA + XB = 0.208 √Δ
[B] √( XA-XB )= 0.208 x Δ
[C] XA-XB = 0.208 √Δ
[D] XA-XB= √(0.208 x& Delta;)
Question No:9
Reference element for Pauling’s electro-negativity is
[A] H
[B] C
[C] C
[D] He
Question No:10
The electronegativity values according to Mulliken scale are ……. times to those in Pauling scale
[A] 0.208
[B] 2
[C] 2.8
[D] 544
Question No:11
Electronegativity on Mulliken scale is limited to
[A] Monovalent atoms
[B] Bivalent atoms
[C] Both Monovalent and bivalent atoms
[D] All multivalent atoms
Question No:12
If I and E are ionisation energy and electron affinity of an element in kJ mole–1 electronegativity is given as
[A] I+E/2
[B] I+E /5.6
[C] I+E/129
[D] I+E544
Question No:13
In a period electronegativity is highest for
[A] Chalcogen
[B] Halogen
[C] Inert gas
[D] Alkali metal
Question No:14
The values that are useful in writing chemical formulae and in calculation of oxidation states are
[A] Iomsation potential
[B] Electron affinity
[C] Electronegativity
[D] Metallic character
Question No:15
Elements with high Electronegativity are generally
[A] Good reductants
[B] Hard solids
[C] Good oxidants
[D] Soft solids
Question No:16
The stable oxidation state of Thallium, a IIIA group element is
[A] 1
[B] 3
[C] -3
[D] 5
Question No:17
Maximum oxidation state (+8) is exhibited by
[A] Co&Ni
[B] Ru&Os
[C] Cl&I
[D] Te & I
Question No:18
An element has nine positive charges in its nucleus. Its common oxidation state is
[A] 7
[B] 5
[C] -1
[D] 1
Question No:19
An element with electronic arrangement as 2, 8, 18, 1 will exhibit the following stable oxidation states
[A] + 2& + 4
[B] + l& + 2
[C] + 2 only
[D] + 1 only
Question No:20
Basic nature of the oxides of a period from left to right
[A] Increases
[B] Decreases
[C] Remains constant
[D] First increases and then decreases