Question

Q1.give reasons:
(a) BH4- and NH4- are isolobal.

(b) Covalent molecules have definite geometry.

(c) Ammonia is more easily liquifiable than HCl gas.

(d) Ionic bonds are non directional .

(e ) NF3 and BF3 are not isostructural .

(f) CO2 and H2 O both are triatomic molecules but there is large difference in their dipole

moments.

(g) ClF3 is T – shaped , while BF3 is trigonal planar.

(h) NaCl gives a white precipitate with AgNO3 solution but CCl4 doesnot .

(i) O- hydroxy benzaldehyde is a liquid at room temperature while p – hydroxy

benzaldehyde is a high melting solid .

(j) A hetero diatomic molecule is always polar.
Q2. Give one example of each –

(a) Odd electron molecule

(b) Molecule with expansion of octet

(c ) Electron precise molecule​

Answer 1

Answer:

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