1. Tardigrade
  2. Question
  3. Chemistry
  4. Two elements X and Y have following electronic configurations X: 1s2 2s2 2p6 3s2 3p6 4s2 Y: 1s2 2s2 2p6 3s2 3p5 The expected compound formed by combination of X and Y will be expressed as

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Q. Two elements $X$ and $Y$ have following electronic configurations
$X : 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$
$Y : 1s^2 2s^2 2p^6 3s^2 3p^5$
The expected compound formed by combination of $X$ and $Y$ will be expressed as

Chemical Bonding and Molecular Structure

Solution:

Valency of element $X$ is $2$ (electrons in the outermost shell) while that of element $Y$ is $1$ (electron required in the outermost shell to complete octet). So, the formula of the compound between $X$ and $Y$ is $XY_2$
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