Last seen: Oct 19, 2020
(d) N+2 becomes diamagnetic Explanation: N+2 is paramagnetic. σ1s2,σ*1πs2 ,σ*2s2 π2p2x = π2p2y, σ2p1z
(b) Pyramidal Explanation: Hybridisation is sp3 and shape pyramidal 2s.png
(c) NH3 Explanation: BF3 and B2H6 being non-polar molecules do not show dipole moment. In NF3, the electronegative F pulls the electron toward its...
(c) pyramidal, sp3 Explanation: S + 2Cl2 → SCl4 SCl4 + 4H2O + x → S(OH)4 + 4HCl S(OH)4 → H2SO3 + H2O The anion of y is SO2-3 in which S is s...
(a) O2 < O3 < O2-2 Explanation: Bond length is inversely proportional to bond order. Bond orders of O2, O3 and O2-2 are 2, 1.5 and 1 respect...
(c) 4 Explanation: In one – C ≡ N, No. of π bonds = 2 So in [Ag (CN2)]-, No. of π bonds = 2 ×2 = 4
(a) (i) and (iv) Explanation: Square Planar Structure: XeF4 and [PtCl4]2-
(d) (i), (ii) and (ii) Explanation: In all compounds, Xe will have same no. of lone pair.
(d) NO+2 Explanation: In NO+2 nitrogen is in sp hybridised state. So, the molecule is linear. So ONO angle is 180° which is maximum among all othe...
(b) H2O2 Explanation: Shape of O2F2 is similar to that of H2O2 because both of them are peroxides.
(a) KO2 Explanation: Species having unpaired electron or odd number of electrons are paramagnetic while species having paired or even number of el...
(b) CH3Cl, CH3F, CH3Br Explanation: Fluorine is most electronegative and Br is least electronegative. So CH3F should have highest dipole moment bu...
(a) 10, 3 Explanation: HC ≡ C - CH2 - CH = CH2 Pent-4-en-1-yne Triple bond between C and C contains one σ bond and two S bonds. Double bond be...
(a) Explanation: Greater the difference in electronegativity between the two atoms, larger will be polarity and hence dipole moment. Thus (a) has ...
(c) C – C Explanation: Greater the number of lone pairs present on the bonded atoms, greater is the repulsive force between them and hence smaller...
(c) Trigonal pyramidal Explanation: In NH3, N is sp3 hybridised; N of NH3 has a lone pair of electrons. The lone pair distorts the normal tetrahed...
(b) Square planar Explanation: Shape of XeF4 molecule is square planar. It involves sp3d2 hybridisation. 2s.png
(c) F – H............F Explanation: Higher the electronegativity of the other atom, greater is the strength of hydrogen bond. Strongest hydrogen b...
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect. Explanation: Both the solute and solvent will form the vapours but vapour phase will become r...