CBSE /Class 9
Science MCQ Based On Atom and molecules introduction
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CBSE Class 9 Science Atom and molecules introduction
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Think about balancing the valencies.Do we write the metal first or the non metal.
1 mole of NaCl consists of 6.022 x 10 (23) ions of sodium and a same number of ions of chlorine as well.
The first letter is in Capital case and following is in small case.
What is the atomic mass of 1 mole of hydrogen?
1 mole quantity of any subtance contains a fixed number of atoms.
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