VIII olympiad chem cdf

for an ionic compound

to be soluble

in water

• hydration energy > lattice

  energy

• lattice energy > Hydration energy

• force of attraction > repulsive force

• none of the above

The bond formed between the two atoms by the mutual sharing of valence electrons is known as

• covalent bond

• ionic bond

• coordinate covalent bond

• none

The bond formed the two atoms by sharing of electron pair which is contributed by only one of the two atoms is known as the

• ionic bond

• covalent bond

• coordinate covalent bond

• metallic bond

The overlapping of atomic orbitals follows the order

• p-p>s-p>s-s

• s-p>p-p>s-s

• p-p>s-s>s-p

• none

Mixing of different shapes and approximate equal energy atomic orbitals ,and redistributing of energy to form new orbitals of same shape and same energy .the new orbitals are called hybrid orbitals are hybrid orbitals and the phenomenon is called as

• hybridisation

• isomerism

• octet rule

• homologous series

The repulsion between

• LP-LP>LP-BP>BP-BP

• LP-bP>BP-BP>LP-BP

• BP-BP>BP-LP>LP-LP

• none

One s orbital combines with two p orbitals to give three identical orbitals called as

• sp hybridisation

• sp2 hybridisation

• sp3 hybridisation

• dsp2 hybridisation

One s orbital and three p orbitals to give four identical orbitals called as

• sp hybridisation

• sp2 hybridisation

• sp3 hybridisation

• sp3d hybridisation

The orbitals involved in which hybridisation are dx2-y2, one s and two p orbitals

?

• sp

• sp2

• sp3

• sp3d

dsp2 hybridisation involves which geometry?

• tetrahedral

• square planar

• octahedral

• trigonal bipyramidal