The correct order of ionisation energy for comparing carbon, nitrogen and oxygen
The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is
Options
(a) CO (b) C>NN>O (d) C>N
Chemistry
The correct order of increasing bond length of C–H, C–O, C–C and C=C is
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?
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
Chemical properties of lithium and magnesium are similar because
Chemical properties of lithium and magnesium are similar because
Options
(a) these belongs to same group (b) shows disgonal relationship (c) both has same ionisation potential (d) both has same electron affinity
Correct […]
In which of the following pairs of molecules/ions, the central atoms have
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?
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 of the following species does not exist under normal conditions?
Which one of the following species does not exist under normal conditions?
Options
(a) Be₂⁺ (b) Be₂ (c) B₂ (d) Li₂
Correct Answer:
Be₂
Explanation:
Bond order of Be₂ is zero hence it […]
The set representing the correct order for the first ionisation potential is
The set representing the correct order for the first ionisation potential is
Options
(a) K > Na > Li (b) Be > Mg > Ca (c) B > C > N (d) Ge […]
Which one is electron deficient compound?
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.
Correct order of first IP among following elements Be, B, C, N, O is
Correct order of first IP among following elements Be, B, C, N, O is
Options
(a) B< Be < C