Q
QuestionChemistry

"What charge is most commonly observed for a nickel ion? A. + 1 B. + 2 C. - 1 D. - 2"
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Answer

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Step 1
: Understand the problem

The problem asks for the most commonly observed charge for a nickel ion. Nickel is an element with atomic number 28, which means it has 28 protons in its nucleus. In order to form a stable ion, an atom tends to lose or gain electrons equal to the difference between its atomic number and its group number in the periodic table.

Step 2
: Determine the group number of nickel

Nickel is located in group 10 of the periodic table.

Final Answer

The most commonly observed charge for a nickel ion is + 2 (option B).