In context with beryllium, which one of the following statements is incorrect?
(a) It is rendered passive by nitric acid
(b) lt forms Be2C
(c) Its salts rarely hydrolyse
(d) Its hydride is electron-deficient and polymeric
(c) Beryllium salts are covalent in nature because of very small Be2+ ion and its high polarising power, so it is easily hydrolysed, e.g. BeCl2+2H2O Be(OH)2 + 2HCl