Question

Write about the element - Chlorine.

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Answer 1

Hello
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Atomic Number : 17
Atomic mass:      35.453
Density:              3.21 g/cm3
Group:                Diatomic nonmetal
Electrons:           [Ne] 3s2 3p5
Melting point:     172.17 K
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Boiling point: 239.18 K
Discovered: 1774

Answer 2

Chlorine is a chemical element with symbol Cl and atomic number 17. 

Atomic weight of chlorine is 35.453

Density of chlorine is 3.214 grams per cubic centimeter

It is in gaseous state at room temperature.

It's boiling point is -29.27 F or -30.04 C

Chlorine's Melting point is -150.7 Fahrenheit or -101.5 degrees C