Question

Write the chemical formula of aluminium fluoride ?​

Answer 1

$<strong><em><u>AlF3</u></em></strong> is the chemical formula is aluminum fluoride$

Answer 2

Answer- The above question is from the chapter 'Chemical Equations and Reactions'.

Given question: Write the chemical formula of aluminium fluoride.

Answer: Aluminium (Al) has atomic number 13.

⇒ Its electronic configuration = 2,8,3

Its valency is 3. It can lose 3 electrons easily to become stable.

Fluoride (F) has atomic number 9.

⇒ Its electronic configuration = 2,7

Its valency is 1. It can gain 1 electron easily to become stable.

Metals (here, Al) and non-metals (here, F) combine together to form an ionic bond.

Formula of their combination(by criss cross method) = Al³⁺ F⁻ = AlF₃

∴ Chemical formula of Aluminium Fluoride is AlF₃.