Question

एक्सप्लेन द विद एग्जांपल वैलेंस इलेक्ट्रोंस
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Answer 1

Answer:

valence electrons means the no. of electrons in the last shell of an atom.

Explanation:

for example , if we take C means carbon having atomic number 6, then it has four valence electrons

1) fill the electrons in the sequence of magic number. these are 2,8,8,18,18,32,...