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ICSE Class 9 Answered

Mark the following statements whether true or false : 1.All elements have a unique valency. 2.Phosphate is a divalent ion. 3.Chemical equations are balanced to satisfy the law of conservation of mass.
Asked by hemanginivyas92.9spicertl | 14 Aug, 2020, 01:05: PM
answered-by-expert Expert Answer

1. False. All elements have a unique atomic number.

2. False. Phosphate(PO43-) is a trivalent ion.

3. True. Chemical equations are balanced to satisfy the law of conservation of mass.

 
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