An ion has a 2⁺ charge and 18 electrons. What is the identity of the element? A. S B. Ar C. Ca D. K

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asked Mar 6, 2024 169k views

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Perry Hoekstra · Answer 1 · 2024-03-11T00:14:05+0000

Answer:

C. Ca (calcium)

Step-by-step explanation:

The neutral atom would have two additional electrons to bring the net charge to zero. That would make it 20 electrons for a neutral atom. To be neutral, it must have 20 protons, which would be element 20, Ca (calcium).

An ion has a 2⁺ charge and 18 electrons. What is the identity of the element? A. S B. Ar C. Ca D. K

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