Assertion (A): The electronic configuration of magnesium is 2,8,2.
Reason (R): The shells in an atom are filled in a stepwise manner.
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The electronic configuration of an element x is :
K L M
2 8 6
a) What is the group no. element x in the periodic table?
b) What is the period no. of element x is the period table ?
c) What is the number of valence electrons in an atom of x ?
d) What is the valency of x ?
e) Is the element x, a metal or a non-metal ?
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