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23 November, 05:33

Which needs two less valence electrons to complete an octet, X+2?

Ne

C

N

Ca

+3
Answers (1)
  1. 23 November, 06:25
    0
    The answer to your question is Ca

    Explanation:

    Ne has its octet completed so, this option is wrong. Neon is stable.

    C Carbon has 4 valence electrons not 2, it should lose 4 electrons to complete an octet, so this option is wrong.

    N Nitrogen has 5 valence electrons not 2, so it should gain 3 electrons to complete an octet.

    Ca Calcium is the right answer it has to electrons in its outermost shell, it have to lose 2 electrons to complete an octet.
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