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Classification of Elements and Periodicity in Properties

571 Questions Start Errorless Test
All Exams Errorless Allen
Q476 Allen IONISATION POTENTIAL MCQ
Successive ionisation energies of an element 'X' are given below (in kcal) IP $_{1}$ IP $_{2}$ IP $_{3}$ IP $_{4}$ 165 195 556 595 Electronic configuration of the element 'X' is:-
A.
$1s^{2}$ , $2s^{2}2p^{6}$ , $3s^{2}3p^{2}$
B.
$1s^{2}$ , $2s^{1}$
C.
$1s^{2}$ , $2s^{2}2p^{2}$
D.
$1s^{2}$ , $2s^{2}2p^{6}$ , $3s^{2}$
Q477 Allen IONISATION POTENTIAL MCQ
Second IP of which of the element is maximum-
A.
Lithium
B.
Oxygen
C.
Nitrogen
D.
Fluorine
Q478 Allen IONISATION POTENTIAL MCQ
Which has the lowest IE :-
A.
$3d^{2}$
B.
$4s^{1}$
C.
$3p^{3}$
D.
$2p^{6}$
Q479 Allen IONISATION POTENTIAL MCQ
The energy needed to remove one electron from unipositive ion is abbreviated as :-
A.
$1^{\text{st}}$ I.P.
B.
$3^{\text{rd}}$ I.P.
C.
$2^{\text{nd}}$ I.P.
D.
$1^{\text{st}}$ E.A.
Q480 Allen IONISATION POTENTIAL MCQ
Among the following elements (Whose electronic configuration is given below) the one having the highest ionisation energy is
A.
[Ne] $3s^{2}$ $3p^{3}$
B.
[Ne] $3s^{2}$ $3p^{4}$
C.
[Ne] $3s^{2}$ $3p^{5}$
D.
[Ar] $3d^{10}4s^{2}4p^{2}$
Q481 Allen IONISATION POTENTIAL MCQ
The correct order of decreasing first ionisation energy is :-
A.
Si > Al > Mg > Na
B.
Si > Mg > Al > Na
C.
Al > Si > Mg > Na
D.
Mg > Li > Al > Si
Q482 Allen IONISATION POTENTIAL MCQ
Out of $Na^{+}$ , $Mg^{+2}$ , $O^{-2}$ and $N^{-3}$ , the pair of species showing minimum and maximum IP would be.
A.
$Na^{+}$ , $Mg^{+2}$
B.
$Mg^{+2}$ , $N^{-3}$
C.
$N^{-3}$ , $Mg^{+2}$
D.
$O^{-2}$ , $N^{-3}$
Q483 Allen IONISATION POTENTIAL MCQ
The element having highest I.P. in the two series C, N, O and Si, P, S:-
A.
P
B.
N
C.
S
D.
O
Q484 Allen IONISATION POTENTIAL MCQ
Factor which does not affects the ionisation potential
A.
Atomic size
B.
Atomic mass
C.
Effective nuclear charge
D.
Shielding effect
Q485 Allen IONISATION POTENTIAL MCQ
Lowest IP will be shown by the element having the configuration :-
A.
[He] $2s^{2}$
B.
$1s^{2}$
C.
[He] $2s^{2} 2p^{2}$
D.
[He] $2s^{2} 2p^{5}$
Q486 Allen IONISATION POTENTIAL MCQ
Which ionisation potential (IP) in the following equations involves the greatest amount of energy:-
A.
$\mathrm{K}^{+}\rightarrow \mathrm{K}^{+2} + \mathrm{e}^{-}$
B.
$\mathrm{Li}^{+}\rightarrow \mathrm{Li}^{+2} + \mathrm{e}^{-}$
C.
$\mathrm{Fe}\rightarrow \mathrm{Fe}^{+} + \mathrm{e}^{-}$
D.
$\mathrm{Ca}^{+}\rightarrow \mathrm{Ca}^{+2} + \mathrm{e}^{-}$
Q487 Allen IONISATION POTENTIAL MCQ
Values of first four ionisation potential of an elements are 68, 370, 400, 485. It belongs to which of the following electronic configuration:-
A.
$1s^{2}$ , $2s^{1}$
B.
$1s^{2}$ , $2s^{2}$ $2p^{1}$
C.
$1s^{2}$ , $2s^{2}$ $2p^{6}$ , $3s^{1}$
D.
A and C both
Q488 Allen IONISATION POTENTIAL MCQ
(a) $\mathrm{M}_{(\mathrm{g})}^{-}\rightarrow \mathrm{M}_{(\mathrm{g})}$ (b) $\mathrm{M}_{(\mathrm{g})}\rightarrow \mathrm{M}^{+}_{(\mathrm{g})}$ (c) $\mathrm{M}^{+}_{(\mathrm{g})}\rightarrow \mathrm{M}^{+2}_{(\mathrm{g})}$ (d) $\mathrm{M}^{+2}_{(\mathrm{g})}\rightarrow \mathrm{M}^{+3}_{(\mathrm{g})}$ Minimum and maximum I.P. would be of :-
A.
a, d
B.
b, c
C.
c, d
D.
d, a
Q489 Allen IONISATION POTENTIAL MCQ
In the plot of the first ionisation energy against atomic number the peaks are occupied by :-
A.
Inert gases
B.
Alkali metals
C.
Halogens
D.
Transition elements
Q490 Allen IONISATION POTENTIAL MCQ
Which one of the following has highest ionisation potential:-
A.
Li $^{+}$
B.
Mg $^{+}$
C.
He
D.
Ne
Q491 Allen IONISATION POTENTIAL MCQ
In which of the following pairs, the ionisation energy of the first species is less than that of the second
A.
N, P
B.
Be+, Be
C.
N, N-
D.
Ne, Ne+
Q492 Allen IONISATION POTENTIAL MCQ
Consider the following ionisation reactions $A(g) \longrightarrow A^{+}(g) + e^{-} \quad IE \text{ in (kJ/mol) is } A_{1}$ $A^{+}(g) \longrightarrow A^{+2}(g) + e^{-} \quad IE \text{ in (kJ/mol) is } A_{2}$ $A^{+2}(g) \longrightarrow A^{+3}(g) + e^{-} \quad IE \text{ in (kJ/mol) is } A_{3}$ then correct order of IE is :-
A.
$A_{1} > A_{2} > A_{3}$
B.
$A_{1} = A_{2} = A_{3}$
C.
$A_{1} < A_{2} < A_{3}$
D.
$A_{3} = A_{2} < A_{1}$
Q493 Allen IONISATION POTENTIAL MCQ
Select the correct order of I.E. :-
A.
$Cl^{-} > Cl > Cl^{+}$
B.
$Cl^{+} > Cl > Cl^{-}$
C.
$Cl > Cl^{+} > Cl^{-}$
D.
$Cl^{-} > Cl^{+} > Cl$
Q494 Allen Electron affinity MCQ
In which case the energy released is minimum:-
A.
Cl → Cl⁻
B.
B → B⁻
C.
N → N⁻
D.
C → C⁻
Q495 Allen Electron affinity MCQ
In the process $Cl_{(g)} + e^{-} \xrightarrow{\Delta H} Cl^{-}_{(g)}$ , $\Delta H$ is
A.
Positive
B.
Negative
C.
Zero
D.
None
Q496 Allen Electron affinity MCQ
Process in which maximum energy is released:-
A.
$O \rightarrow O^{-2}$
B.
$Mg^{+} \rightarrow Mg^{+2}$
C.
$Cl \rightarrow Cl^{-}$
D.
$F \rightarrow F^{-}$
Q497 Allen Electron affinity MCQ
Which of the following is energy releasing process
A.
$X^{-} \rightarrow X(g) + e^{-}$
B.
$O^{-}(g) + e^{-} \rightarrow O^{2-}$
C.
$O(g) \rightarrow O^{+}(g) + e^{-}$
D.
$O(g) + e^{-} \rightarrow O^{-}(g)$
Q498 Allen Electron affinity MCQ
In which of the following process energy is liberated:-
A.
$\mathrm{Cl}\rightarrow \mathrm{Cl}^{+} + \mathrm{e}$
B.
$\mathrm{HCl}\rightarrow \mathrm{H}^{+} + \mathrm{Cl}^{-}$
C.
$\mathrm{Cl} + \mathrm{e}\rightarrow \mathrm{Cl}^{-}$
D.
$0^{-} + \mathrm{e}\rightarrow 0^{-2}$
Q499 Allen Electron affinity MCQ
Element of which atomic number has highest electron affinity:-
A.
35
B.
17
C.
9
D.
53
Q500 Allen 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