The extra conversion of concentration of reactant and product should be zero in order to attaining equlibrium state.
<h3>What is equilibrium?</h3>
Chemical equilibrium refers to the state in which both the reactants and products are present in equal concentrations or amount. In equlibrium, same amount of reactant is converted into product and product into reactant.
So we can conclude that the extra conversion of concentration of reactant and product should be zero in order to attaining equlibrium state.
Ground state means 1s which can hold 2 electrons. l for 1s is = 0 ml = 0 (given) possible values of m = 0 so it can hold maximum of 2 electrons. One spin up and other spin down.