Question

An element X contain 3 electrons as valence electrons and the valence shell is M . Its atomic number will be *

a) 12

b) 3

c) 13

d) 23

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Answer 1

Answer:

12 make me a brainlist please

Answer 2

Solution :

☞ According to the given question , the element X contains three electrons in it's outermost orbit .

☞ These electron's are also known as the valence electron's  and 3 is the valency of the element .

☞ The electronic configuration of this element X is( 2,8,3  )

☞ Here , 2 represents the no of electron's present in the K shell , 8 represents the number of electrons present in the L shell and 3  represents the number of electrons present in the M shell .

☞ The atomic number of element X is 13 and the name of element X is aluminum.