Question

an element with three electron shells and two electrons in its valence shell belongs to period ____(3,6,1) and group_____(3,6,2)​

Answer 1

Answer:

PERIOD 3

GROUP 2

ALKALI METAL

MAGNESIUM

VALENCY + 2

ATOMIC NUMBER 12

MASS 24

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Answer 2

Answer:

period 3

group 2

$\large\boxed{\fcolorbox{blue}{yellow}{MAGNESIUM}}$