How many total atoms are there in 47.9 g of hydrazine (

47.9 g hydrazine will have Nitrogen atoms and atoms of hydrogen.

Explanation:

Given that the mass of hydrazine is 47.9 g. the molecular formula of hydrazine is . We have to calculate the molecular mass of hydrazine.

We have to calculate the number of moles of hydrazine present in 47.9 g of hydrazine.

1 mole of any substance contains Avogadro number of particles.

The value of Avogadro number is

Thus 1.495 moles of hydrazine will contain molecules which is molecules.

Next we have to calculate the number of nitrogen and hydrogen atoms  

1 mole of hydrazine has 2 atoms of nitrogen and 4 atoms of hydrogen

Thus number of N atoms in molecules of hydrazine

Similarly number of H atoms in molecules of hydrazine

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.