Suppose a gas mixture of F, Cl, Br, and I is irradiated with high energy rays that can ionise Cl. Which ion(s) will be present in the mixture?

F^{+}

only

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C l^{+}

only

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F^{+}, C l^{+}, B r^{+}

only

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C l^{+}, B r^{+}, I^{+}

only

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Solution

The correct option is D $C l^{+}, B r^{+}, I^{+}$ only
If the rays has enough energy to ionise $C l$ , the radiation can ionise $B r$ and $I$ also. As ionisation energy decreases down the group, the ionisation energy of $B r$ and $I$ would be lesser than Cl.

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Suppose a gas mixture of F, Cl, Br, and I is irradiated with high energy rays that can ionise Cl. Which ion(s) will be present in the mixture?

The correct option is D Cl+, Br+, I+ onlyIf the rays has enough energy to ionise Cl, the radiation can ionise Br and I also. As ionisation energy decreases down the group, the ionisation energy of Br and I would be lesser than Cl.

The correct option is D $C l^{+}, B r^{+}, I^{+}$ only
If the rays has enough energy to ionise $C l$ , the radiation can ionise $B r$ and $I$ also. As ionisation energy decreases down the group, the ionisation energy of $B r$ and $I$ would be lesser than Cl.