12. Give the nuclide symbols of sodium (atomic number = 11, mass number = 23) and phosphorus (atomic number = 15, mass number = 31).
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Explanation:
Write the molecular formulae for the oxides and sulphides of the following elements. (a) Sodium (b) Calcium (c) Hydrogen c
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Explanation:
23/11 =Na.
31/15= P.
please mark me as a vip symbol
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