Question

The given figure depicts the atomic structure of an atom of an element ‘X’.

Write the following information about the element ‘X’.



(a) Atomic number of ‘X’

(b) Mass number of ‘X’

(c) Valence electrons

(d) Valency of ‘X’

(e) ‘X’ should be metal or non-metal.

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Answer 1

Answer:

A.Atomic Number of 'X'

Answer 2

Answer:

atomic number = 11

atomic mass = 23 u

valence elctron = 1

valency = 1

x should be metal

Explanaation

atomic number = no. of protons

atomic mass = no. of protons + no.of neutrons = 11 + 12 = 23u

valence electrons are the electrons in the outermost shell = 1 in this is case

it easier for the element to lose one electron rather than to gain 7 to get an inert gas configuration this valency = 1

it is a metal as it will loose electrons and metals have a tendency to lose electrons....

hope it helps

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