Question

Which one of the following can more
readily donate the lone pair

ΝΗ,
NH3
ASH
BiH3​

Answer 1

Answer:

Explanation:

if you are asking basicity this your answer

inverse of acidic character

so bih3>ash

ash>bih3 for basic

and for nh and nh3

and for this also

apply oxidation rule

which is directly proportional to positive oxidation state and inversely proportional to negative oxidation state

that why nh>nh3 in acidity

nh3>nh in basicity

so basicity order becomes

nh3>nh>ash>bih3

if you talk about nucleophilic character

solubility is inversely related to size of substance

if the solvent is polar protic

we know that it solvates both anion and cation

for acid we remove h plus

and negative charge comes on that

after formation of negative charge the solvent solvates and effective size of lower ones becomes more

so it is inverse of basic if polar protic solvent is used

order of nucleophilicity in case of polar protic

bih3>ash>nh>nh3

if polar aprotic one is used

it cannot solvate anion

so order of nucleophilicity remains same as basicity order in case of polar aprotic

order of nucleophilicity in case of polar aprotic

nh3>nh>ash>bih3

Answer 2

Answer:

NH3

Explanation:

Since after forming NH3 the nitrogen has a lone pair of free electrons which does not participate in the bonding. So it readily donate the lone pair.