Measurement Of Matter
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The proportion of hydrogen and oxygen by weight in water is..
Atomic mass number
The valency of chlorine(2,8,7) is
10 gram calcium = mole of calcium ( Atomic mass of ca=40u)
Which of the following electronic configuration indicates the valency as 2?
The chemical symbol of cadmium is….
the valency of carbonate
Which of the following elements has variable valency?
What is the valency of CU in the compound CuO?
Which of the following elements has outer Orbit completely filled?