Which one of the following elements is most likely to form a 2+ ion
A) calcium
B) carbon
C) fluorine
D) oxygen
E) sodium

Name: Which one of the following elements is most likely to form a 2+ ion A) calcium B) carbon C) fluorine D) oxygen E) sodium
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Question

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Calcium is a metal and its outermost electron is loosely held, making it easy to lose two electrons and form a 2+ ion. Carbon, fluorine, oxygen, and sodium are not metals and are less likely to form 2+ ions.

Which One of the Following Elements Is Most Likely to Form