Question

Richa has 144 g of ozone. Naina has 0.2 mol of $P_4$ while Ankur has $36.02\times {10}^{23}$ molecules of $N_2$. Which of the following is the correct order of number of electrons they have ?

• A. Ankur < Naina < Richa
• B. Naina < Richa < Ankur
• C. Ankur < Richa < Naina
• D. Richa < Ankur < Naina

Answer 1

The correct option is B Naina < Richa < Ankur

Richa have 3 mole of ozone means 9 mole atoms of oxygen & each oxygen contains 8 electron so she have 72 mole of electrons.
Naina have 0.8 mole of P atoms means & each P have 15 mole of electron so she have 12 mole of electron.
Ankur have 6 mole of nitrogen gas molecules and 12 mole of N atoms and each N have 7 electron so he have 84 mole of electrons.