IIT-JEE 1989 | JEE Advanced Year Wise Previous Years Questions - ExamSIDE.Com

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1

IIT-JEE 1989

MCQ (Single Correct Answer)

+1

-0.25

The correct set of quantum numbers for the unpaired electron of chlorine atom is

A

n = 2, l = 1, m = 0

B

n = 2, l = 1, m = 1

C

n = 3, l = 1, m = 1

D

n = 3, l = 0, m = 0

2

IIT-JEE 1989

MCQ (Single Correct Answer)

+1

-0.25

The correct ground state electronic configuration of chromium atom is

A

[Ar] 3d⁵ 4s¹

B

[Ar] 3d⁴ 4s²

C

[Ar] 3d⁶ 4s⁰

D

[Ar] 4d⁵ 4s¹

3

IIT-JEE 1989

MCQ (Single Correct Answer)

+1

-0.25

Which one of the following is the smallest in size?

A

N^3-

B

O^2-

C

F^-

D

Na⁺

4

IIT-JEE 1989

MCQ (Single Correct Answer)

+1

-0.25

Which one of the following is the strongest base?

A

AsH₃

B

NH₃

C

PH₃

D

SbH₃

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