from helium , write down the mass number and the atomic number of the element
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HELIUM:
1.Atomic mass =2
2.Atomic number =2
...hope this answer helps :)
also..in one of the places it (atomic mass) is mentioned as 4.002602 u...
1.Atomic mass =2
2.Atomic number =2
...hope this answer helps :)
also..in one of the places it (atomic mass) is mentioned as 4.002602 u...
siidgah:
Atomic mass of helium is 4
2 P &2 N
but I do hv found 2 in sm of the books
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