AIEEE 2007 | Chemical Bonding & Molecular Structure Question 246 | Chemistry

The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizinig order of the polarizing power of the cationic species, K⁺, Ca²⁺, Mg²⁺, Be²⁺?

Mg²⁺ < Be²⁺ < K⁺ < Ca²⁺

K⁺ < Ca²⁺ < Mg²⁺ < Be²⁺

Be²⁺ < K⁺ < Ca²⁺ < Mg²⁺

Ca²⁺ < Mg²⁺ < Be²⁺ < K⁺

AIEEE 2007

MCQ (Single Correct Answer)

-1

Which of the following species exhibits the diamagnetic behaviour?

$$O_2^{2−}$$

$$O_2^+$$

O₂

AIEEE 2006

MCQ (Single Correct Answer)

-1

Which of the following molecules/ions does not contain unpaired electrons?

$$O_2^{2−} $$

B₂

$$N_2^+$$

O₂

AIEEE 2006

MCQ (Single Correct Answer)

-1

In which of the following molecules/ions are all the bonds not equal?

XeF₄

$$BF_4^−$$

SF₄

SiF₄

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