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21 December, 12:22

As we move across the periodic table, from potassium, K, to krypton, Kr, we see the following changes. All BUT ONE is correct

A) Elements change from solids to gases.

B) Elements change from metals to metalloids to nonmetals.

C) Valence electrons increase beginning with one and ending with eight.

D) The charge of ions changes: negative to the left and positive to the right

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  1. 21 December, 14:04
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    The answer is A B and C
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