Question

Write the atomic numbers of two elements 'X' and 'Y' having electronic configuration 2, 8, 2 and 2, 8, 6 respectively.

Answer 1

x = 12 = magnesium
y = 16 = sulphur

Answer 2

atomic number of 'X' is 12 i.e magnesium(Mg) and atomic number of 'Y' is 16 i.e is sulphur(S).
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