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On going down the group (F to I),

The colour intensity of Group 17 increases

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going down group 17, the colour intensity of halogen increases. The volatility of halogen decreases 

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going down group 17, the colour intensity of halogen increases. The volatility of halogen decreases 

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by Yap

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Gas - yellow?

Gas - greenish yellow

Liquid - reddish brown

Solid - black

https://youtu.be/dQw4w9WgXcQ?si=c2Cpq0Njoe3ptmYk

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Njf

F2

-gas, pale yellow

Cl2

-gas, greenish yellow

Br2

-liquid, reddish brown

I2

-solid, purplish black

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Going down the group 17, the colour intensity increases.

Fluorine-pale yellow

Chlorine-greenish yellow

Bromine- reddish brown

Iodine- purple/black

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Fluorine Gas Pale Yellow

Chlorine Gas Greenish-yellow

Bromine Liquid Reddish-brown

Iodine Solid Black

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Very informative

-ky

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Colour intensity of Group 17 elements increase on going down the group and the volatility of Group 17 elements decrease down the group.

Fluorine pale yellow gas

Chlorine greenish-yellow gas

Bromine reddish-brown aqueous

Iodine purplish-black solid

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On going down Group 17, the colour intensity of Group 17 increases.

Fluorine is pale yellow

Chlorine is greenish yellow

Bromine is reddish-brown

Iodine is purple

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On going down the group, the colour intensity of Group 17 increases.

Fluorine → gas, pale yellow

Chlorine → gas, greenish yellow

Bromine → aqueous solution, reddish brown

Iodine → solid, purplish-black