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Write down the (a) electronic config...

Write down the
(a) electronic configuration,
(b) number of protons and
(c) number of neutrons and
(d) nature of the element, for the following .
(1) `""_(6)X^(12)" "(2)""_(10)Y^(20)" "(3)""_(19)Z^(39)`

Text Solution

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(i) `2n^(2)`
(ii) Electrons in last orbit
(iii) Mass number-atomic number
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