Three elements X, Y and Z have atomic numbers 11, 12 and 17 respectively. Find the sum of their electrovalency.

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Solution

The correct option is D 4
To attain the nearest noble gas configuration X and Y have to lose 1 and 2 electrons respectively during the formation of the ionic bond while, Z will have to gain 1 electron for the same.
$∴$ Sum of electrovalency = 1+2+1 = 4

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Formal Charge

Standard XI Chemistry

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Three elements X, Y and Z have atomic numbers 11, 12 and 17 respectively. Find the sum of their electrovalency.

The correct option is D 4To attain the nearest noble gas configuration X and Y have to lose 1 and 2 electrons respectively during the formation of the ionic bond while, Z will have to gain 1 electron for the same. ∴ Sum of electrovalency = 1+2+1 = 4

The correct option is D 4
To attain the nearest noble gas configuration X and Y have to lose 1 and 2 electrons respectively during the formation of the ionic bond while, Z will have to gain 1 electron for the same.
$∴$ Sum of electrovalency = 1+2+1 = 4