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1
JEE Main 2022 (Online) 27th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of increasing ionic radii is

A
Mg2+ < Na+ < F$$-$$ < O2$$-$$ < N3$$-$$
B
N3$$-$$ < O2$$-$$ < F$$-$$ < Na+ < Mg2+
C
F$$-$$ < Na+ < O2$$-$$ < Mg2+ < N3$$-$$
D
Na+ < F$$-$$ < Mg2+ < O2$$-$$ < N3$$-$$
2
JEE Main 2022 (Online) 27th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The ionic radii of O2$$-$$ and Mg2+ are same.

Reason (R) : Both O2$$-$$ and Mg2+ are isoelectronic species.

In the light of the above statements, choose the correct answer from the options given below.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true but (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.
3
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of electron gain enthalpies of Cl, F, Te and Po is

A
F < Cl < Te < Po
B
Po < Te < F < Cl
C
Te < Po < Cl < F
D
Cl < F < Te < Po
4
JEE Main 2022 (Online) 24th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are the oxides:

Na2O, As2O3, N2O, NO and Cl2O7

Number of amphoteric oxides is :

A
0
B
1
C
2
D
3
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