From the perspective of molecular orbital theory, which statement is false?

1.	${\mathrm{Be}}_2$ is not a stable molecule.
2.	${\mathrm{He}}_2$ is not stable but ${\mathrm{He}}_2^{+}$ is expected to exist.
3.	Bond strength of ${\mathrm{N}}_2$ is maximum amongst the homonuclear diatomic molecules belonging to the second period.
4.	The order of energies of molecular orbitals in ${\mathrm{N}}_2$ molecule is:  ${\mathrm{\sigma }}_{2\mathrm{s}}<{\mathrm{\sigma }}_{2\mathrm{s}}^{*}<{\mathrm{\sigma }}_{2{\mathrm{p}}_{\mathrm{z}}}<({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}\approx {\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}})$ $<({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}^{*}\approx {\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}}^{*})<{\mathrm{\sigma }}_{2{\mathrm{p}}_{\mathrm{z}}}^{*}$

The correct increasing order of ionic character of the following molecule is:
 LiF, K₂O, N₂, SO₂, ClF₃ 

1. N₂ < SO₂ < ClF₃ < K₂O < LiF

2. N₂ > SO₂ > ClF₃ > K₂O < LiF

3. N₂ > SO₂ > K₂O > ClF₃ > LiF

4. LiF > K₂O < ClF₃ > SO₂ > N₂

In $P{O}_4^{-3}$, formal charge on every oxygen atom and P-O bond order respectively are:
1. –0.75 and 1.25
2. –0.5 and 2
3. 1 and 1.5
4. –0.75 and 2

In a regular octahedral molecule, MX₆, the number of X–M–X bonds at 180º is:

The decreasing order of ionic character of the N-H, F-H, C-H, and O-H, is :  

In NO₃^– ion, the number of bond pair and lone pair of electrons on nitrogen atom are respectively:

The incorrect statements among the following are-

The number of (i) sp² hybridized carbon atoms and (ii) $\mathrm{\pi }$ bonds are present in the following compound are:

1. 7, 5

2. 8, 6

3. 7, 6

4. 8, 5

Match List-I with List-II

Choose the correct answer from the options given below:

Correct Lewis structure of the nitrite ion, \(NO_{2}^{-}\) among the following is:

1.		2.
3.		4.	None of the above