Question

the number of neutrons in an atom x is 18 and numbers protons are 17 find the mass number of the element​

Answer 1

Answer:

we know that mass number is the sum of nucleons that is the sum of protons and neutron

mass number -- 17 + 18 -- 35

Explanation:

the atom x is chlorine and its atomic number is 17 mass number is 35 and its valency is 1.

hope it is helpful for you .

Answer 2

For example, the atomic mass of chlorine (Cl) is 35.45 amu because chlorine is composed of several isotopes, some (the majority) with anatomic mass of 35 amu (17 protons and 18 neutrons) and some with an atomic mass of 37 amu (17 protons and 20 neutrons).

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