Question

Calculate the atomic number and the mass number of the element whose nuclus contain 11 proton and 12 neutron

Answer 1

Answer:

• the atomic number is 11
• the atomic mass is 23 u

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Answer 2

Explanation:

mass of an atom= no. of proton+ no. of neutron

=11 + 12 =23

atomic no.= no. of proton present in the nucleus

= 11

name of element is SODIUM { NA}

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