Question

An Element X has been discovered. Element X forms an Xt ion and

G9 EOT3 2020-
has an atomic number of 11. The X* ion of Element X forms a bond
with CI.
1-3
5.00
11
Na
Mg
3
22.99
19
24.10
20
21
K
Ca
Sc
19.10
400
19
Rb
Sr
Y
NOT
R$ 47
53
N7
so
CS
Ba
3.71
112.91
117 11
Ra
malleable and co
malene bi

Answer 1

Answer: The chemical symbol of the compound formed is
`XCl` or
`NaCl`

Step-by-step explanation:

An ionic compound is formed when the complete transfer of electrons takes place from one element (usually metals) to another element (usually non-metals).

The element losing electron (metal) forms a positive ion known as a cation while the element gaining electron (non-metal) forms a negative ion known as an anion.

Element X has the atomic number 11 which is sodium. The electronic configuration of it is
`1s^22s^22p^63s^1`

This element will lose 1 electron to form
`X^+` ion of
`Na^+`

Chlorine has the atomic number 17. The electronic configuration of it is
`1s^22s^22p^63s^23p^5`

This element will gain 1 electron to form
`Cl^-` ion

When these two ions combine, they lead to the formation of an ionic compound having a chemical formula of
`XCl` or
`NaCl`

Hence, the chemical symbol of the compound formed is
`XCl` or
`NaCl`