The correct electronic configuration and spin-only
magnetic moment (BM) of Gd³⁺ (Z = 64), respectively, are :

In the following reaction sequence the major products A and B are :

Which of the following is not an essential amino acid :

Consider the following reaction:

N₂O₄(g) ⇌ 2NO₂(g); $$\Delta $$H^o = +58 kJ

For each of the following cases (a, b), the direction in which the equilibrium shifts is :
(a) Temperature is decreased.
(b) Pressure is increased by adding N₂ at constant T.