ICSE /Class 7
Chemistry MCQ Based On Valency definition
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ICSE Class 7 Chemistry Valency definition
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Choose the option which makes the statement true.
The valency of hydrogen is 1.
Calcium nitride is Ca3Na2.
The no. of electrons O atom would gain to complete it's octet.
The atomic number of zinc is 30.
The atomic number of magnesium is 12.
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