What is the nature of the bond between B and O in (C₂H₅)₂ OBH₃?
Options
(a) Covalent (b) Coordinate Covalent (c) ionic bond (d) Banana shaped bond
Correct Answer:
Coordinate Covalent
Explanation:
In […]
The pair of species that has the same bond order in the following is:
Options
(a) O₂, B₂ (b) CO, NO⁺ (c) NO⁻, CN⁻ (d) O₂, N₂
Correct Answer:
CO, NO⁺
Explanation:
No. […]
The species having maximum stability is
Options
(a) CN⁺ (b) CN (c) CN⁻ (d) NO
Correct Answer:
CN⁻
Explanation:
In CN⁺, CN, CN⁻ and NO bond orders are 2, 2.5, 3 and 2.5 […]
The correct order of increasing bond angles in the following species is
Options
(a) Cl₂O < ClO₂ < ClO₂⁻ (b) ClO₂ < Cl₂O < ClO₂⁻ (c) Cl₂O < ClO₂⁻ < ClO₂ (d) ClO₂⁻ […]
Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear?
Options
(a) CH₃-CH=CH-CH₃ (b) CH₃-C≡C-CH₃ (c) CH₂=CH-CH₂-C≡CH (d) CH₃-CH₂-CH₂-CH₃
Correct Answer:
CH₃-C≡C-CH₃
Explanation:
sp³ sp […]
The correct order of increasing bond length of C–H, C–O, C–C and C=C is
Options
(a) C–C < C=C < C–O < C–H (b) C–O < C–H < C–C < C=C (c) C–H […]
In which of the following pairs, the two species are iso-structure?
Options
(a) SO₃²⁻ and NO₃⁻ (b) BF₃ and NF₃ (c) BrO₃⁻ and XeO₃ (d) SF₄ and XeF₄
Correct Answer:
BrO₃⁻ and XeO₃
In which of the following pairs of molecules/ions, the central atoms have sp²-hybridisation?
Options
(a) NO₂⁻ and NH₃ (b) BF₃ and NO₂⁻ (c) NH₂⁻ and H₂O (d) BF₃ and NH₂⁻
Correct Answer:
BF₃ […]
Which of the following molecules has trigonal planar geometry?
Options
(a) BF₃ (b) NH₃ (c) PH₃ (d) IF₃
Correct Answer:
BF₃
Explanation:
(a) BF₃ ⇒ 3bp + 0/p ⇒ sp³ -hybridisation and triagonal […]
Which one is electron deficient compound?
Options
(a) NH₃ (b) ICl (c) BCl₃ (d) PCl₃
Correct Answer:
BCl₃
Explanation:
BCl₃ has six electrons in outer shell of boron atom.
2017 Copyright Doctor Dreams Training Academy