NEET Atomic Size Practice Questions With Solutions

NEET Chemistry Atomic Size Practice Questions

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Question 1.

The correct decreasing order of atomic radii (pm) of Li, Be, B and C is:

ABe > Li > B > C

BLi > Be > B > C

CC > B > Be > Li

DLi > C > Be > B

Question 2.

The element expected to form the largest ion to achieve the nearest noble gas configuration is:

ASodium(Na)

BOxygen(O)

CFluorine(F)

DNitrogen(N)

Question 3.

The species Ar, K⁺ and Ca²⁺ contain the same number of electrons. In which order do their radii increase?

AAr < K⁺< Ca²⁺

BCa²⁺ < Ar < K⁺

CCa²⁺< K⁺< Ar

DK⁺ < Ar < Ca²⁺

Question 4.

The correct order of ionic radii is:

A

H^{-} > H^{+} > H

B

N a^{+} > F^{-} > O^{2 -}

C

F^{-} > O^{2 -} > N a^{+}

D

N^{3 -} > M g^{2 +} > A l^{3 +}

Question 5.

Among the elements Ca, Mg, P and Cl, the correct order of increasing atomic radii is:

ACl < P < Mg < Ca

BP < Cl < Ca < Mg

CCa < Mg < P < Cl

DMg < Ca < Cl < P

Question 6.

The correct order of the decreasing ionic radii among the following isoelectronic species is:

A

C a^{2 +} > K^{+} > S^{2 -} > C l^{-}

B

C l^{-} > S^{2 -} > C a^{2 +} > K^{+}

C

S^{2 -} > C l^{-} > K^{+} > C a^{2 +}

D

K^{+} > C a^{2 +} > C l^{-} > S^{2 -}

Question 7.

Identify the correct order of the size of the following:

A

C a^{2 +} < K^{+} < A r < S^{2 -} < C l^{-}

B

C a^{2 +} < K^{+} < A r < C l^{-} < S^{2 -}

C

A r < C a^{2 +} < K^{+} < C l^{-} < S^{2 -}

D

C a^{2 +} < A r^{+} < K^{+} < C l^{-} < S^{2 -}

Question 8.

Ionic radii are:

AInversely proportional to the square of effective nuclear charge.

BDirectly proportional to the effective nuclear charge.

CDirectly proportional to the square of effective nuclear charge.

DInversely proportional to the effective nuclear charge.

Question 9.

The ions O^2–, F^–, Na⁺, Mg²⁺, and Al³⁺ are isoelectronic. Their ionic radii show:

AA significant increase from O^2– to Al³⁺.

BA significant decrease from O^2– to Al³⁺.

CAn increase from O^2– to F^– and then a decrease from Na⁺ to Al³⁺.

DA decrease from O^2– to F^– and then an increase from Na⁺ to Al³⁺.

Question 10.

In which of the following molecule, the internuclear distance will be maximum:

ACsI

BCsF

CLiF

DLiI

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