Question

An Element X has 13protons, 13electrons and 14 neutrons.
Answer the following questions:
a) What is its atomic number of X‟?
b) Identify the element.
c) What is its valency? What is the number of valence electrons is “x”?
d) What is the type of ion formed by “X” ? Why?
e) Name the scientists who discovered electrons and protons.

Answer 1

a)it's atomic number is 13
b)Alluminium
c)valency is +3 ,3 valence electrons
d)cataion as it is a metal
e)JJ.THOMPSON discovered electron and Rutherford discover protons.
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Answer 2

Hii dear here is your answer

This answer is verified ✅✅

a) The Atomic no.of X" is 13.

b) The name of the element is Aluminium (Al).

c) It's valency is 3+. The number of valence electron is 3.

d) The type of ion formed by "X is Trivalent Cations because Trivalent means positive ions having a valency of 3+ (three plus).



e) Electron was discovered by J.J Thomson.
Proton was discovered by E.Goldstein.

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