Which of the following formulas does not correctly represent the bonding capacity of the atom involved?

Which of the following statements is incorrect?

Which of the following is the correct decreasing order of bond length for $N_2$, $O_2$, and $Cl_2$?

Observe the following statements:
$i$. The dipole moment of $NH_3$ is higher than the dipole moment of $NF_3$.
$ii$. The dipole moment of chloroform $(CHCl_3)$ is zero.
$iii$. Covalent bond character in $NaCl$ is more compared to $CuCl$.

Which of the following statements is true?

Solid $BeH_2$ and solid $BeCl_2$ differ in