Answer:
Cl₁₇ = 1s² 2s² 2p⁶ 3s² 3p⁵
Explanation:
Electronic configuration:
Cl₁₇ = 1s² 2s² 2p⁶ 3s² 3p⁵
Properties of chlorine:
Chlorine is present in group seventeen.
It is halogen element. its atomic number is seventeen.
It has seven valance electrons.
It is greenish-yellow irritating gas.
Its melting point is 172.2 K
Its boiling point is 238.6 K
It is disinfectant and can kill the bacteria.
It is also used in manufacturing of paper, paints and textile industries.
When combine with hydrogen it form acids.
H₂ + Cl₂ → 2HCl
it is highly electronegative and most reactive element.
When combine with metals it form salts such as sodium chloride, magnesium chloride.
2Na + Cl₂ → 2NaCl
Mg + Cl₂ → MgCl₂
