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In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38.

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asked May 14, 2017 in Chemistry by sforrest072 (157,439 points) ● 60 ● 409 ● 933

In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?

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answered May 14, 2017 by Rohit Singh (61,782 points) ● 35 ● 133 ● 356
selected May 14, 2017 by sforrest072
 
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Answer :
The element with atomic number 12 has same chemical properties as that of calcium.
This is because both of them have same number of valence electrons (2).

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