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Classification of Elements and Periodicity in Properties

173 Questions Start Allen Test
All Exams Errorless Allen
Q101 Allen 5. ELECTRON AFFINITY MCQ
Element of which atomic number has highest electron affinity:-
A.
35
B.
17
C.
9
D.
53
Q102 Allen 5. ELECTRON AFFINITY MCQ
Second electron affinity of an element is :-
A.
Always exothermic
B.
Endothermic for few elements
C.
Exothermic for few elements
D.
Always endothermic
Q103 Allen 5. ELECTRON AFFINITY MCQ
The electron affinity
A.
Of carbon is greater than oxygen
B.
Of fluorine is less than iodine
C.
Of fluorine is less than Chlorine
D.
Of sulphur is less than oxygen
Q104 Allen 5. ELECTRON AFFINITY MCQ
Which of the following configuration will have least electron affinity.
A.
$ns^{2}np^{5}$
B.
$ns^{2}np^{2}$
C.
$ns^{2}np^{3}$
D.
$ns^{2}np^{4}$
Q105 Allen 5. ELECTRON AFFINITY MCQ
Which of the following element will form most stable bivalent anion.
A.
Fluorine
B.
Oxygen
C.
Chlorine
D.
Nitrogen
CPT122
Q106 Allen 5. ELECTRON AFFINITY MCQ
Energy absorbed in second electron addition in an atom is called.
A.
$1^{st}$ IP
B.
$2^{nd}$ EA
C.
$1^{st}$ EA
D.
$2^{nd}$ IP
Q107 Allen 5. ELECTRON AFFINITY MCQ
The amount of energy released for the process $X_{(g)} + e^{-} \rightarrow X_{-(g)}^{-}$ is minimum and maximum respectively for :- (a) F (b) Cl (c) N (d) B Correct answer is :-
A.
c & a
B.
d & b
C.
a & b
D.
c & b
Q108 Allen 5. ELECTRON AFFINITY MCQ
Which of the following electronic configuration is expected to have highest electron affinity:-
A.
$2s^{2} 2p^{0}$
B.
$2s^{2} 2p^{2}$
C.
$2s^{2} 2p^{3}$
D.
$2s^{2} 2p^{1}$
Q109 Allen 6. ELECTRONEGATIVITY MCQ
Electronegativity scale of pauling is based upon :-
A.
Bond length
B.
Bond energy
C.
Atomic radius
D.
Covalent radius
Q110 Allen 6. ELECTRONEGATIVITY MCQ
Polarity of a bond can be explained by :-
A.
Electron affinity
B.
Ionisation potential
C.
Electronegativity
D.
All of the above
Q111 Allen 6. ELECTRONEGATIVITY MCQ
Outermost electronic configuration of the most electronegative element is :-
A.
$\mathrm{ns}^2\mathrm{np}^3$
B.
$\mathrm{ns}^2\mathrm{np}^6$
C.
$\mathrm{ns}^2$
D.
$\mathrm{ns}^2\mathrm{np}^5$
Q112 Allen 6. ELECTRONEGATIVITY MCQ
Electronegativity values for elements are useful in predicting :-
A.
Bond energy of a molecule
B.
Polarity of a bond
C.
Nature of an oxide
D.
All
Q113 Allen 6. ELECTRONEGATIVITY MCQ
Mulliken scale of electronegativity uses the concept of :-
A.
E. A. and EN of pauling
B.
E. A. and atomic size
C.
E.A. and I.P.
D.
E.A. and bond energy
Q114 Allen 6. ELECTRONEGATIVITY MCQ
The pair with minimum difference in electronegativity is :-
A.
F, Cl
B.
C, H
C.
P, H
D.
Na, Cs
Q115 Allen 6. ELECTRONEGATIVITY MCQ
Least electronegative element is :-
A.
I
B.
Br
C.
C
D.
Cs
Q116 Allen 6. ELECTRONEGATIVITY MCQ
In which of the following pair of elements the electronegativity of first element is less than that of second element :-
A.
Zr, Hf
B.
K, Rb
C.
Cl, S
D.
None of the above
Q117 Allen 6. ELECTRONEGATIVITY MCQ
The nomenclature of ICl is iodine chloride because
A.
Size of I < Size of Cl
B.
Atomic number of I > Atomic number of Cl
C.
E.N. of I < E.N. of Cl
D.
E. A. of I < E. A. of Cl
Q118 Allen 6. ELECTRONEGATIVITY MCQ
Among the following least and most polar bonds are respectively:
(a) C - I (b) N - O
(c) C - F (d) P - F
A.
d and c
B.
a and d
C.
b and d
D.
b and c
Q119 Allen 6. ELECTRONEGATIVITY MCQ
If the ionisation potential is IP, electron affinity is EA and electronegativity is X then which of the following relation is correct:
A.
$2\mathrm{X} - \mathrm{EA} - \mathrm{IP} = 0$
B.
$2\mathrm{EA} - \mathrm{X} - \mathrm{IP} = 0$
C.
$2\mathrm{IP} - \mathrm{X} - \mathrm{EA} = 0$
D.
All of the above
Q120 Allen 6. ELECTRONEGATIVITY MCQ
The properties which are not common to both groups 1 and 17 elements in the periodic table are :-
A.
Electropositive character increases down the groups
B.
Reactivity decreases from top to bottom in these groups
C.
Atomic radii increases as the atomic number increases
D.
Electronegativity decreases on moving down the group
Q121 Allen 6. ELECTRONEGATIVITY MCQ
Electronegativity of an element can be measured using :-
A.
Pauling's scale
B.
Mulliken's scale
C.
Both
D.
None
Q122 Allen 6. ELECTRONEGATIVITY MCQ
As we proceed across the period in periodic table, we find there is a decrease in :-
A.
Ionisation energy
B.
Electron affinity
C.
Electronegativity
D.
Atomic radii
Q123 Allen 6. ELECTRONEGATIVITY MCQ
Which compound strongly absorb $\mathrm{CO}_{2}$ ?
A.
BeO
B.
$\mathrm{K}_{2} \mathrm{O}$
C.
$\mathrm{H}_{3} \mathrm{PO}_{4}$
D.
$\mathrm{P}_{4} \mathrm{O}_{6}$
Q124 Allen 6. ELECTRONEGATIVITY MCQ
The electronegativities of the following elements: H, O, F, S and Cl increase in the order :-
A.
$\mathrm{H} < \mathrm{O} < \mathrm{F} < \mathrm{S} < \mathrm{Cl}$
B.
$\mathrm{Cl} < \mathrm{H} < \mathrm{O} < \mathrm{F} < \mathrm{S}$
C.
$\mathrm{H} < \mathrm{S} < \mathrm{O} < \mathrm{Cl} < \mathrm{F}$
D.
$\mathrm{H} < \mathrm{S} < \mathrm{Cl} < \mathrm{O} < \mathrm{F}$ CPT144
Q125 Allen 6. ELECTRONEGATIVITY MCQ
Which of the following is different from other three oxides :-
A.
MgO
B.
SnO
C.
PbO
D.
ZnO