Question:

Which of the following is the electron configuration for an active metal?

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1s22s22p63s1

1s22s22p63s13p1

1s22s22p63s13p5

1s22s22p63s13p6

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  1. The most chemically reactive representative metals have 1 or 2 valence electrons.

    1s2 2s2 2p6 3s1, which is Na, is the most reactive (acitve)

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