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Classification of Elements and Periodicity in Properties

173 Questions Start Allen Test
All Exams Errorless Allen
Q76 Allen 4. IONISATION POTENTIAL MCQ
Minimum first ionisation energy is shown by which electronic configuration:-
A.
$1s^{2}$ , $2s^{2}$ $2p^{5}$
B.
$1s^{2}$ , $2s^{2}$ $2p^{6}$ , $3s^{2}$ $3p^{2}$
C.
$1s^{2}$ , $2s^{2}$ $2p^{6}$ , $3s^{1}$
D.
$1s^{2}$ , $2s^{2}$ $2p^{6}$
Q77 Allen 4. IONISATION POTENTIAL MCQ
With reference to ionisation potential which one of the following set is correct :-
A.
Li > K > B
B.
B > Li > K
C.
Cs > Li > K
D.
Cs < Li < K
Q78 Allen 4. 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.
$1s^{2}$ , $2s^{2}2p^{6}$ , $3s^{2}$
Q79 Allen 4. IONISATION POTENTIAL MCQ
Second IP of which of the element is maximum-
A.
Lithium
B.
Oxygen
C.
Nitrogen
D.
Fluorine
Q80 Allen 4. IONISATION POTENTIAL MCQ
Which has the lowest IE :-
A.
$3d^{2}$
B.
$4s^{1}$
C.
$3p^{3}$
D.
$2p^{6}$
Q81 Allen 4. 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.
Q82 Allen 4. 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] $3d^{10}4s^{2}4p^{2}$
Q83 Allen 4. 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
Q84 Allen 4. 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.
$O^{-2}$ , $N^{-3}$
Q85 Allen 4. 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
Q86 Allen 4. IONISATION POTENTIAL MCQ
Factor which does not affects the ionisation potential
A.
Atomic size
B.
Atomic mass
C.
Effective nuclear charge
D.
Shielding effect
Q87 Allen 4. 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] $2s^{2} 2p^{5}$
Q88 Allen 4. 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.
$\mathrm{Ca}^{+}\rightarrow \mathrm{Ca}^{+2} + \mathrm{e}^{-}$
Q89 Allen 4. 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
Q90 Allen 4. 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
Q91 Allen 4. 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
Q92 Allen 4. IONISATION POTENTIAL MCQ
Which one of the following has highest ionisation potential:-
A.
Li $^{+}$
B.
Mg $^{+}$
C.
He
D.
Ne
Q93 Allen 4. 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+
Q94 Allen 4. 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.
$A_{3} = A_{2} < A_{1}$
Q95 Allen 4. IONISATION POTENTIAL MCQ
Select the correct order of I.E. :-
A.
$Cl^{-} > Cl > Cl^{+}$
B.
$Cl^{+} > Cl > Cl^{-}$
C.
$Cl > Cl^{+} > Cl^{-}$
D.
$Cl^{-} > Cl^{+} > Cl$
Q96 Allen 5. ELECTRON AFFINITY MCQ
In which case the energy released is minimum:-
A.
Cl → Cl⁻
B.
B → B⁻
C.
N → N⁻
D.
C → C⁻
Q97 Allen 5. 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
Q98 Allen 5. 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.
$F \rightarrow F^{-}$
Q99 Allen 5. 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.
$O(g) + e^{-} \rightarrow O^{-}(g)$
Q100 Allen 5. 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.
$0^{-} + \mathrm{e}\rightarrow 0^{-2}$