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Respected sir, Do we have to remember the mass no of elements 30-86 ,if so is there any formula? I would count on your reply,

 
Respected sir,
Do we have to remember the mass no of elements 30-86 ,if so is there any formula? I would count on your reply, 

Grade:11

1 Answers

Shivangi Khatter
askIITians Faculty 468 Points
5 years ago
no, u need not remember all the mass numbers axcept for a very few elements

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