$A$ covalent molecule $AB_{3}$ has a pyramidal structure. The number of lone pairs and bond pairs of electrons in the molecule are respectively:

Amongst the following,the linear species is:

$XH_3 + H^{+} \longrightarrow XH_4^{+} (X = N, P, As, Sb)$. In this process,the maximum increase in bond angle will be in the case of $:-$

$A$ central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is

Which of the following triatomic molecules are linear? How is this determined?
$H_2O, F_2O, BeH_2, BeCl_2, H_2S, CO_2$

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$ :
Assertion $A$ : The $H-O-H$ bond angle in water molecule is $104.5^{\circ}$.
Reason $R$ : The lone pair $-$ lone pair repulsion of electrons is higher than the bond pair $-$ bond pair repulsion.