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An element E has following electronic co...

An element E has following electronic configuration :
`{:(K,L,M,),(2,8,6,):}`
(a) To which group of the periodic table does element E belong ?
(b) To which period of the periodic table does element E belong ?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.

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