What is the first quantum number of a 2s2 electron in phosphorus, 1s22s22p 3s23p3?
O A. n = 2
O B. n = 3
0 C. n = 0
D. n = 1
SUBMIT

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

Ibelieve it's dna hope this out at least

Is there a c and d?