21. The symbol of helium atom is 42He. How many
neutrons are present in He2+ ion?
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Answered by
2
Answer:
Atoms that have acquired a charge by losing or gaining electrons are called ions. Besides He2 +, other symbols for this particle are. When ...
Missing: He2+ | Must include: He2+
Answered by
3
Answer:
symbol =⁴He
Neutrons=2
Explanation:
He2+ ion has 2 protons. Helium has 2 protons and 2 electrons, When it loses 2 electrons, it becomes Helium ion (also called alpha particle) or He2+.
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