Suppose a gaseous mixture of $H e, N e, A r, K r$ is irradiated with photons of frequency appropriate to ionize $A r$ . What ions will be present in the mixture?

{A r}^{+}

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{K r}^{+}

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{H e}^{+}

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Both

A

and

B

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Solution

The correct option is D Both $A$ and $B$
Ionization Energy decreases down the group. Thus, Ionization energy of Argon is sufficient to ionize both Argon and Krypton. Thus, both ${A r}^{+}$ and ${K r}^{+}$ ions will be present in mixture.

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Suppose a gaseous mixture of He,Ne,Ar,Kr is irradiated with photons of frequency appropriate to ionize Ar. What ions will be present in the mixture?

The correct option is D Both A and BIonization Energy decreases down the group. Thus, Ionization energy of Argon is sufficient to ionize both Argon and Krypton. Thus, both Ar+ and Kr+ ions will be present in mixture.

Suppose a gaseous mixture of $H e, N e, A r, K r$ is irradiated with photons of frequency appropriate to ionize $A r$ . What ions will be present in the mixture?

The correct option is D Both $A$ and $B$
Ionization Energy decreases down the group. Thus, Ionization energy of Argon is sufficient to ionize both Argon and Krypton. Thus, both ${A r}^{+}$ and ${K r}^{+}$ ions will be present in mixture.