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Ionization Enthalpy

The IE1 and t...

Question

The $(I E_{1})$ and the $(I E_{2})$ in $k J m o l^{- 1}$ of a few elements designated by Roman numerals are shown below:
$\begin{matrix} I & I I I E_{1} & 400 & 589 I E_{2} & 2510 & 1120 \end{matrix}$
Elements $I$ and $I I$ respectively are likely to be?

A

Non-metal, alkali metal

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B

Alkali metal, alkaline earth metal

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C

Alkaline earth metal, non metal

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D

Alkaline earth metal, alkali metal

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Solution

The correct option is B Alkali metal, alkaline earth metal
For $I$ , the second ionization energy is 6 times that of the first ionization energy. This huge jump indicates that the atom attains a stable electronic configuration after the removal of the first electron. Hence, it must br an alkali metal.

For $I I$ , the first ionization energy is lower than the second ionization energy and there is no significant jump. So, it must be an alkaline earth metal.

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Similar questions

(I E_{1})

(I E_{2})

k J m o l^{- 1}

of a few elements designated by Roman numerals are shown below:

\begin{matrix} I & I I I E_{1} & 400 & 589 I E_{2} & 2510 & 1120 \end{matrix}

I

I I

respectively are likely to be?

(I E_{1})

(I E_{2})

k J m o l^{- 1}

of a few elements designated by Roman numerals are shown below:

\begin{matrix} I & I I I E_{1} & 400 & 589 I E_{2} & 2510 & 1120 \end{matrix}

I

I I

respectively are likely to be?

Q. The ionization enthalpies,

(I E)_{1}

(I E)_{2}

^{- 1}

of a few elements designated by Roman numerals are shown below :

Element	$(I E)_{1}$	$(I E)_{2}$
A	2372	5251
B	520	7300
C	900	1760
D	1680	3380

Which of the above elements form a stable binary halide of the formula

M X_{2}

(I E)_{1}

(I E)_{2}

^{- 1}

of a few elements designated by Roman numerals are shown below

Element	$(I E)_{1}$	$(I E)_{2}$
A	2372	5251
B	520	7300
C	900	1760
D	1680	3380

Based on above information, Which represents a noble gas ?

I E_{1}

I E_{2}

) ionization energies (kJ/mol) of a few elements designated by Roman numerals are given below. Which of these would be an alkali metal?

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