Amolecule with the formula ab3 could have one of four different shapes. give the shape and the hybridization of the central a atom for each.

Trigonal  planar and  SP^2  hybridization   of  the  central  atom  of  molecule  with  ab^3  formula.

This  molecule  is  made  up  of  3   equally  spaced sp^2  hybrid  orbital  arranged   at  120  degree  angles.  The shape  of the  orbital  is  planar   triangular   since  there  is  an  atom   at  the   end  of  each orbital.

The correct answer is Option D.

Explanation:

Lewis dot structures are the structures which represent the valance electrons of an element forming a compound. The electrons are represented as the dots.

In a compound, the bonded electrons are represented as a bond and lone pair of electrons are represented as dots.

In compound,

Electronic configuration of Nitrogen:

Valence electrons in nitrogen = 5

Electronic configuration of hydrogen:

Valence electrons in hydrogen = 1

In the given compound, bond pairs are 2 which means number of electrons bonded are 4.

Unbonded electrons left on nitrogen will be 3 and this compound has an extra electron because of the negative charge present on the compound. Hence, total unbonded electrons present on this compound will be 4.

Therefore, the lewis dot structure will be Option D.