SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When writing chemical formulas, the ____ is always written first.
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Nonmetal
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Least electronegative
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negative
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positive
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Explanation:
Detailed explanation-1: -The rule for writing chemical formula is as follow: Firstly, write the symbols with positive charge valency first. Secondly, write the valency of each atom on the top of its symbol.
Detailed explanation-2: -Positive and Negative Ions Metals tend to form positive ions while non-metals form negative ions. In a chemical formula the positive ion is written first.
There is 1 question to complete.