The electronic configuration of three elements X - Y and Z are given below beginarray -c- c-c- c - hline X-2- Nlliline Y-2-6- -llhline Z - 2-88-82 llinelend array Which element belongs to the second group-A- YB- ZC- XD- All of the above

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Standard IX

Chemistry

Atomic Number and Mass Number

The electroni...

Question

The electronic configuration of three elements X, Y and Z are given below
$\begin{matrix} X & 2 Y & 2, & 6 Z & 2, & 8, & 2 \end{matrix}$
Which element belongs to the second group?

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All of the above

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Solution

The correct option is B
Z

Z belongs to second group because it has 2 valence electrons , X also has 2 valence electrons but it has only 2 electrons which is configuration of Helium (group 18 element).

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The electronic configuration of three elements X, Y and Z are given below X2 Y2,6 Z2,8,2 Which element belongs to the second group?

The correct option is B Z Z belongs to second group because it has 2 valence electrons , X also has 2 valence electrons but it has only 2 electrons which is configuration of Helium (group 18 element).

The electronic configuration of three elements X, Y and Z are given below
$\begin{matrix} X & 2 Y & 2, & 6 Z & 2, & 8, & 2 \end{matrix}$
Which element belongs to the second group?

The correct option is B
Z

Z belongs to second group because it has 2 valence electrons , X also has 2 valence electrons but it has only 2 electrons which is configuration of Helium (group 18 element).