How many of the following orders are correct? (i) NaF < MgF < AlF (order of lattice energy) (ii) BeC — NEET Chemistry Past Papers Chemistry Question

Question

How many of the following orders are correct? (i) NaF < MgF < AlF (order of lattice energy) (ii) BeCl < MgCl < CaCl < SrCl < BaCl (order of covalent character) (iii) BeCO < MgCO < CaCO < SrCO < BaCO (order of thermal stability) (iv) LiH > NaH > KH > RbH > CsH (order of thermal stability) (v) LiCl > NaCl > KCl > RbCl > CsCl (order of melting point) (vi) Li CO < Na CO < K CO < Rb CO < Cs CO (order of solubility in water) (A) 5 (B) 4 (C) 6 (D) 2