4 years ago

PLEASE ASAP

Chemistry

1 answer:

QveST [7]4 years ago

3 0

Answer:

Ca2+ represents an ion with 20 protons and 18 electrons.

Explanation:

A calcium atom has 20 protons and 20 electrons. The 2+ charge next to the symbol indicates a loss of two electrons: 20-2=18.

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