AIEEE 2007 | Chemical Bonding & Molecular Structure Question 223 | 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 hydrogen bonds is the strongest?

O−H…….N

F−H…….F

O−H…….O

O−H…….F

AIEEE 2006

MCQ (Single Correct Answer)

-1

The decreasing values of bond angles from NH₃ (106^o) to SbH₃ (91^o ) down group-15 of the periodic table is due to

increasing bp-bp repulsion

increasing p-orbital character in sp³

decreasing lp-bp repulsion

decreasing electronegativity

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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