How to remember atomic mass of a element ?
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Answered by
12
Answer:
but every time we can't do the doubling..
like for chlorine , etc..
yaad he krne padenge...
【 :| 】
Answered by
0
Explanation:
- There's no need to learn the atomic masses of each and every elements.
- You have to know the atomic masses of first 20 elements, some transition metals, gr 18 elements and some elements like uranium, thorium etc.
- The atomic mass is double the atomic number of an element. But it is not applicable for all the elements in the periodic table.
- The atomic masses of elements like He, Li, C, N, O, Ne, Si, S, Cl, Ca are double the atomic number.
- The atomic masses of elements like Be, B, F, Na, Mg, Al, P, Ar and K are not double the atomic number.
- For these elements just double the atomic number and add 1.
All The Very Best and Good Luck :)
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