Statement 1: HF forms two series of salts but HCl not. 

Statement 2: F-atom is more electronegative than Cl-atom

HF forms ${\mathrm{NaHF}}_2$ and NaF salt due to its dimerised formula ${\mathrm{H}}_2{\mathrm{F}}_2$ on account of H-bonding. No doubt F is more electronegative than Cl.