Vapour density of a metal chloride is 66. Its oxide contains 53% metal. The atomic weight of the metal is

Let wt. of metal oxide = 100 gwt. of metal = 53 gwt. of oxygen = 47 gEquivalent weight of oxygen                                        =wt.  of  metalwt. of  oxygen × 8=5347 ×  8=9.02Valency=2 ×  V.DE+35.5  =  2 ×  669+35.5=13244.5=2.96=3∴   Atomic weight = Equivalent weight x Valency                                        = 9.20 x 3 = 27.06