Question

The atomic weight of lithium is : options


1) 4
2) 7
3) 5
4) 10​

Answer 1

Answer:

The atomic mass of lithium is 7 u.

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Answer 2

Answer:

The atomic weight of lithium is 7

Explanation:

atomic weight and mass number is same

so mass number =no of protons +no of neutrons

=3+4

=7

no of protons =3

no of neutrons =4

atomic number =3

no of electrons=3