43. If the formulae of respective chlorides of X and Y are XClz and YCl, respectively, then the valencies
of X and Y are

43. If the formulae of respective chlorides of X and Y are XClz and YCl, respectively, then the valencies
of X and Y are
(1) 3 and 2
(2) 3 and 4
(3) 1 and 1
(4) 1 and 4​

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