ICSE Class 10 Answered
Element X has 2 valence electrons ,element X has atomic number 7.
A) Write equation to show how X and Y form ions.
B) If B is a diatomic gas ,write the equation for the direct combination of X and Y to form a compound.
Asked by mittaljeevesh | 11 Dec, 2018, 19:06: PM
Element X has 2 valence electrons which means it has valency = 2
![straight X space rightwards arrow with blank on top space straight X to the power of 2 plus end exponent space plus 2 space straight e to the power of minus](https://images.topperlearning.com/topper/tinymce/cache/99ade74d9f4c9a0b9b0b7e72c88c4ef5.png)
element X has atomic number 7. Its electronic arrangement is (2,5) which means it's valency is 3.
![straight Y space plus space 3 straight e to the power of minus rightwards arrow with blank on top space straight Y to the power of 3 minus end exponent](https://images.topperlearning.com/topper/tinymce/cache/61550e83e3cd242130460e9592b46a84.png)
The equation for the direct combination of X and Y to form a compound.
![3 straight X to the power of 2 plus end exponent space plus space 2 straight Y to the power of 3 minus end exponent rightwards arrow with blank on top space straight X subscript 3 straight Y subscript 2](https://images.topperlearning.com/topper/tinymce/cache/14e1b0d082c3df6f775b5c5536f0ebf8.png)
Answered by Ramandeep | 12 Dec, 2018, 11:03: AM
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