mass number is up or down
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it's in up
below is automatic number
below is automatic number
shree333:
can u mark it as brainlirst answers
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⏺heya friend !
✔here's your answer :-
〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰
⚫when representing mass number of an element , the relative atomic mass is written at the lower or at bottom of the element ,
⚫and atomic number is written at the up side.
◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
i hope it helps u !!!!☺
✔here's your answer :-
〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰
⚫when representing mass number of an element , the relative atomic mass is written at the lower or at bottom of the element ,
⚫and atomic number is written at the up side.
◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
i hope it helps u !!!!☺
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