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Classification of Elements and Periodicity in Properties

173 Questions Start Allen Test
All Exams Errorless Allen
Q151 Allen 7. PYQ MCQ
If first ionization enthalpies of element X and Y are 419 kJ mol $^{-1}$ and 590 kJ mol $^{-1}$ , respectively and second ionization enthalpies of X and Y are 3069 kJ mol $^{-1}$ and 1145 kJ mol $^{-1}$ , respectively. Then correct statement is :-
A.
X is an alkali metal and Y is an alkaline earth metal.
B.
X is an alkaline earth metal and Y is an alkali metal.
C.
Both X and Y are alkali metals.
D.
Both X and Y are alkaline earth metals.
Q152 Allen 7. PYQ MCQ
The correct order of first ionization enthalpy for the given four element is:
A.
C < N < F < O
B.
C < N < O < F
C.
C < O < N < F
D.
C < F < N < O
Q153 Allen 7. PYQ MCQ
The element expected to form largest ion to achieve the nearest noble gas configuration is
A.
F
B.
N
C.
Na
D.
O
Q154 Allen 7. PYQ MCQ
Which of the following is correctly matched?
A.
Basic oxides $\Rightarrow$ In $_{2}$ O $_{3}$ , K $_{2}$ O, SnO $_{2}$
B.
Neutral oxides $\Rightarrow$ CO, NO $_{2}$ , N $_{2}$ O
C.
Acidic oxides $\Rightarrow$ Mn $_{2}$ O $_{7}$ , SO $_{2}$ , TeO $_{3}$
D.
Amphoteric oxides $\Rightarrow$ BeO, Ga $_{2}$ O $_{3}$ , GeO
Q155 Allen 7. PYQ MCQ
The correct sequence given below containing neutral, acidic, basic and amphoteric oxide each, respectively, is
A.
NO, ZnO, CO₂, CaO
B.
ZnO, NO, CaO, CO₂
C.
NO, CO₂, ZnO, CaO
D.
NO, CO₂, CaO, ZnO
Q156 Allen 7. PYQ MCQ
Arrange the following elements in increasing order of electronegativity. N, O, F, C, Si Choose the correct answer from the options given below:
A.
Si < C < N < O < F
B.
Si < C < O < N < F
C.
O < F < N < C < Si
D.
F < O < N < C < Si
Q157 Allen 7. PYQ MCQ
Arrange the following elements in increasing order of first ionization enthalpy: Li, Be, B, C, N Choose the correct answer from the options given below :
A.
Li < Be < B < C < N
B.
Li < B < Be < C < N
C.
Li < Be < C < B < N
D.
Li < Be < N < B < C
Q158 Allen 7. PYQ MCQ
The correct decreasing order of atomic radii (pm) of Li, Be, B and C is:
A.
Be > Li > B > C
B.
Li > Be > B > C
C.
C > B > Be > Li
D.
Li > C > Be > B
Q159 Allen 7. PYQ MCQ
Match Column-I(Block/group in (Element periodic table) with Column-II(Element).
Choose the correct answer from the options given below :
Column-IColumn-II
(A)Lanthanoid
(B)d-block element
(C)p-block element
(D)s-block element
(P)Ce
(Q)As
(R)Cs
(S)Mn
A.
A-P, B-Q, C-S, D-R
B.
A-P, B-S, C-R, D-Q
C.
A-P, B-S, C-Q, D-R
D.
A-S, B-P, C-Q, D-R
Q160 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements:Statement-I : F, atom has less negative electron gain enthalpy than Cl, atomStatement-II : Addition of electron is more effective in 3p orbital of Cl atom than 2p orbital of F atom. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement-I ; II both are correct.
B.
Statement-I is correct but II are incorrect.
C.
Statement-I is incorrect but II is correct.
D.
Both statement-I ; II are incorrect.
Q161 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements:Statement-I : In Lanthenoid series 14 elements are presentStatement-II : f orbital can consist maximum 14 electrons. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement-I & II both are correct.
B.
Statement-I is correct but II are incorrect.
C.
Statement-I is incorrect but II is correct.
D.
Both statement-I & II are incorrect.
Q162 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements:Statement-I : Atomic radius of Ga is less than AlStatement-II : Effective nuclear charge of Ga is greater than Al. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement-I ; II both are correct.
B.
Statement-I is correct but II are incorrect.
C.
Statement-I is incorrect but II is correct.
D.
Both statement-I II are incorrect.
Q163 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements:Statement-I : The radius of 5d series element is nearly similar to the 4d series element.Statement-II : Due to poor shielding effect of 4f e- Effective nuclear charge of 5d series elements is greater than that of 4d series elements. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement-I ; II both are correct.
B.
Statement-I is correct but II are incorrect.
C.
Statement-I is incorrect but II is correct.
D.
Both statement-I ; II are incorrect.
Q164 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements:Statement-I : The formation of $O^{-2}$ is endothermicStatement-II : Ionisation energy of $S^{-}$ is more than $O^{-}$. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement-I & II both are correct.
B.
Statement-I is correct but II are incorrect.
C.
Statement-I is incorrect but II is correct.
D.
Both statement-I & II are incorrect.
Q165 Allen 8. ANALYTICAL QUESTIONS MCQ
Which of the following are true :
(a) $EA_1(F) > EA_1(Cl)$
(b) $EA_1(Br) > EA_1(I)$
(c) $EA_1(Br) > EA_1(F)$
(d) $EA_1(Cl) > EA_1(F)$
A.
If (a) (b) and (c) are correct.
B.
If (a) & (b) both options are correct.
C.
If (b) and (d) both options are correct.
D.
If (a) and (c) both options are correct.
Q166 Allen 8. ANALYTICAL QUESTIONS MCQ
Assertion (A) : Generally, ionisation enthalpy increase from left to right in a period Reason (R) : In a Period, $Z_{eff}$ Increases from left to right. In the light of the above statements, choose the most appropriate answer from the options given below :
A.
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
B.
(A) is correct but (R) is not correct.
C.
(A) is not correct but (R) is correct.
D.
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Q167 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Generally electron gain enthalpy become's more negative as we go down a group
Reason (R) : Chlorine has maximum value of electron gain enthalpy in periodic Table.
In the light of the above statements,
choose the most appropriate answer from the options given below:
A.
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
B.
(A) is correct but (R) is not correct.
C.
(A) is not correct but (R) is correct.
D.
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Q168 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In Mg, Al and Si First ionisation enthalpy of Mg is more then Al but less then Si
Reason (R): $Z_{eff}$ of Mg > Al.
In the light of the above statements,
choose the most appropriate answer from the options given below:
A.
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
B.
(A) is correct but (R) is not correct.
C.
(A) is not correct but (R) is correct.
D.
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Q169 Allen 8. ANALYTICAL QUESTIONS MCQ
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In Ionisation energy, Electron affinity and Electronegativity only EN value regularly increase in a period.
Reason (R) : EN value of carbon atom are same in all compound of carbon.
In the light of the above statements,
choose the most appropriate answer from the options given below :
A.
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
B.
(A) is correct but (R) is not correct.
C.
(A) is not correct but (R) is correct.
D.
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Q170 Allen 8. ANALYTICAL QUESTIONS MCQ
Match the Column-I with Column-II
Column-IColumn-II
(A)Be
(B)N
(C)O
(D)C
(P)88
(Q)70
(R)111
(S)74
A.
A – S, B – R, C – P, D – Q
B.
A – Q, B – R, C – P, D – S
C.
A – R, B – S, C – Q, D – P
D.
A – Q, B – P, C– R, D –S
Q171 Allen 8. ANALYTICAL QUESTIONS MCQ
Match the Column-I with Column-II:
Column-IColumn-II
(A)1s² 2s² 2p⁶
(B)1s² 2s² 2p⁶ 3s¹
(C)1s² 2s² 2p⁵
(D)1s² 2s² 2p⁴
(P)−53
(Q)−333
(R)−141
(S)+116
A.
A - S, B -Q, C - P, D - R
B.
A - S, B - P, C - Q, D - R
C.
$A - R, B- S, C - Q, D - P$
D.
A - Q, B - R, C- P, D - S
Q172 Allen 8. ANALYTICAL QUESTIONS MCQ
Match the Column-I with Column-II :
Column-IColumn-II
(A)B > Tl > Ga > Al > In
(B)Cl > F > Br > I
(C)F > Cl > Br > I
(D)B < Ga < Al < In < Tl
(P)Electron affinity (EA)
(Q)Electronegativity (EN)
(R)Ionisation energy (IP)
(S)Atomic radius
A.
$A - \mathrm{P}, B - \mathrm{Q}, C - \mathrm{S}, D- \mathrm{R}$
B.
$A - P, B - Q, C - R, IV - S$
C.
$A - \mathrm{R}, B - \mathrm{P}, C- \mathrm{Q}, D - \mathrm{S}$
D.
$A - \mathrm{S}, B - \mathrm{R}, C- \mathrm{Q}, D - \mathrm{P}$
Q173 Allen 8. ANALYTICAL QUESTIONS MCQ
Match the Column-I with Column-II :
Column-IColumn-II
(A)$(n-1)d^5,ns^1$
(B)$(n-1)f^{14}(n-1)d^0,ns^2$
(C)$(n-1)d^{10},ns^2,np^3$
(D)$(n-1)d^{10},ns^1$
(P)3rd
(Q)15th
(R)11th
(S)6th
A.
$A - \mathrm{S}, B- \mathrm{Q}, C - \mathrm{P}, D - \mathrm{R}$
B.
$A - \mathrm{S}, B - \mathrm{P}, C - \mathrm{Q}, D - \mathrm{R}$
C.
$A- \mathrm{R}, B - \mathrm{S}, C- \mathrm{Q}, D - \mathrm{P}$
D.
$A - \mathrm{Q}, B - \mathrm{R}, C - \mathrm{P}, D - \mathrm{S}$