Subject :NSO Class : Class 9
Elements X, Y and Z have valencies 1, 2 and 3 respectively. Formula unit masses of their oxides are 62, 40 and 102 respectively. If atomic mass of Z is divided by thrice the difference in atomic masses of X and Y then value obtained is the atomic number of which of the following elements?
ACarbon
BOxygen
CFluorine
DNeon
Ans 1:
Class : Class 9
Fluorine