Science, asked by ricky70, 11 months ago

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Answered by PrativaDewri
0
a) Atomic nmbr of element is 20.
b) It belongs to group nmbr 2 and period nmbr
3.
c) The element is Calcium.
d) An element having chemical properties similar to calcium is Magnesium.

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Answered by Anonymous
3
a)The atomic number is 20
b)group number 2 and period number 3
c)the element is calcium
d) barium or radium
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