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Chemical Bonding and Atomic Structure MCQs for NEET — Chemistry Questions with Answers

Practice free Chemical Bonding and Atomic Structure (Chemistry) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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Select pair of compound in which both have differant hybridization but have same molecular geomatery:

$B F_{3,} B r F_{3}$

$I C I_{2}, B e C I_{2}$

$B C I_{3,} P C I_{3}$

$P C I_{3,} N C I_{3}$

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Explanation

(b) $B F_{3} s p^{2}$ Trigonal planar

$B r F_{3} s p^{3} d$ Bent 'T' shape

$I C I_{2} s p^{3} d$ Linear

$B e C I_{2} s p$ Linear

$B C I_{3} s p^{2}$ Trigonal planar

$P C I_{3} s p^{3}$ Pyramidal

$N C I_{3} s p^{3}$ Pyramidal

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Which molecule does not exist?

$O F_{2}$

$O F_{4}$

$S F_{2}$

$S F_{4}$

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Explanation

(b) Maximum covalency of oxygen atom is three, hence $O F_{4}$ does not exist

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A compound contains three elements A, B and C , if the oxidation of A = +2, B = +5 Aand C = -2, the possible formula of the compound is:

$A_{3} (B_{4} C)_{2}$

$A_{3} (B C_{4})_{2}$

$A_{2} (B C_{3})_{2}$

$A B C_{2}$

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Explanation

(b) $A^{2 +} + B {C_{4}}^{3 -} \Rightarrow A_{3} (B C_{4})_{2}$

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The spacies having no p $π$ -p $π$ bond but has bond order equal to that of $O_{2}$

$C I O \underset{3}{-}$

$P {O_{4}}^{3 -}$

$S {O_{4}}^{2 -}$

$X e O_{3}$

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Which pair of atom form strongest ionic bond?

Al and As

Al and N

Al and Se

AL and O

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Explanation

(d) Among given non-metals , O-atom has high electron affinity and strong ionic bond is formed between Al and O-atom

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The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:

(i) ${CO}_{3}^{2 -}$ (ii) ${XeF}_{4}$ (iii) $I_{3}$ (iv) ${NCI}_{3}$ (v) ${BeCl}_{2}$

(ii)<(iii)<(iv)<(i)<(v)

(ii)<(iv)<(iii)<(v)<(i)

(iii)<(ii)<(i)<(v)<(iv)

(ii)<(iv)<(iii)<(i)<(v)

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Explanation

(a) ${CO}_{3}^{-} {XeF}_{4} I_{3}^{-} {NCL}_{3} {BeCL}_{2} {sp}^{2} {sp}^{3} d^{2} {sp}^{3} d {sp}^{3} sp$

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How many resonance forms can be written for the nitrate ion, ( $N {O_{3}}^{-}$ )?

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Explanation

The nitrate ion (NOâ‚ƒâ») has three resonance structures due to the delocalization of the negative charge over the three oxygen atoms. The three resonance forms help stabilize the ion by distributing the negative charge evenly.

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Which of the following fact is directly explained by the statement 'oxygen is a simillar atom than sulpher'?

$H_{2} O$ boils at a much higher tempreture than $H_{2} S$

$H_{2} S$ undergoes intermolecure hydrogen bonding

$H_{2} O$ is liquid and $H_{2} S$ is gas at room tempreture

S $—$ H bond is longer than O $—$ H bond

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Explanation

(d) As size of sulphur is higher than that of oxygen atom, hence bond length of S $—$ H bond is higher than of O $—$ H bond.

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Among given species identify the isostructural pairs:

$[N F_{3} a n d B F_{3}]$

$[B {F_{4}}^{-} a n d N {H_{4}}^{+}]$

$[B C l_{3} a n d B r C l_{3}]$

$[N H_{3} a n d N {O_{3}}^{-}]$

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Consider the following information (X=F or Cl)

Molecule P-X(axial) P-X(Equitorial)

bond length bond length

PF_{5 a b}

PF₄CH_{3 c d}

PF₃(CH₃)_{2 e f}

PCl_{5 g h}

According to information choose the incorrect order of bond length :

g>a>d>b

g>e>f>b

f>d>a>b

c>f>d>b

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