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1900's Physics and Wave

In which of t...

Question

In which of the following the energy change corresponds to first ionisation potential?

A

X_{g} \to X_{(g)}^{+} + e

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B

2 X_{g} \to 2 X_{(g)}^{+} + 2 e

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C

X_{s} \to X_{(g)}^{+} + e

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D

X_{a g} \to X_{(a g)}^{+} + e

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Solution

The correct option is A $X_{g} \to X_{(g)}^{+} + e$
The energy change for the process $X_{g} \to X_{g}^{+} + e^{-}$ , the energy change corresponds to first ionization potential.
It is the minimum amount of energy required to remove an electron from last orbit of an isolated (free) atom in the gaseous state.

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Similar questions

_{0}

/2 atoms of X(g) are converted into X

^{+}

(g) by energy E

_{1}

_{0}

/2 atoms of X(g) are converted into X

^{-}

(g) by energy E

_{2}

. Hence, ionisation potential and electron affinity of X(g) are:

Q. Consider the following changes

M (s) ⟶ M (g)

M (g) ⟶ M^{2 +} (g) + 2 e^{-}

M (g) ⟶ M^{+} (g) + e^{-}

M^{+} (g) ⟶ M^{2 +} (g) + e^{-}

M (g) ⟶ M^{2 +} (g) + 2 e^{-}

...(5)
The second ionisation energy of

M

could be determined from the energy values associated with:

Q. For the process

X (g) + e^{-} \to X^{-} (g), Δ H = x

X^{-} (g) \to X (g) + e^{-}, Δ H = y

Select correct alternative:

X_{(g)} + e^{-} \to X_{(g)}^{-} + E

E

N_o/2 atoms of X(g) are converted into X⁺(g) by energy E₁. N_o/2 atoms of X(g) are converted into X^-(g) by energy E₂. Hence the ionisation potential and electron affinity of X(g) per atom are:

A. 2E₁/N_o., 2(E₂-E₁)/N_o

B. 2E₁/N_o.,. 2E₂/N_o

C. E₁-E₂/N_{o. ,.}2E₂/N_o

D. None is correct

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