Shubham Jha - Class 10
The number of protons in an atom of an element A is 19 then, the number of electron in its ion A+ is:
Anonymous Quiz
16
18
20
22
⏤‌❱⋆⋆‌⃝🦋⃟'‌🇴ANAMIKA❱⋆⋆‌⃝🦋⃟'‌, 

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