The mass number is 265.
given that,
electron = 106
Neutron = 159
charge = +1
find,
Mass number =?
Z= no. of proton + no. of neutron
= 106 + 159
=265
The mass number of an ion is 265.
The quantity of particles in the nucleus is determined by the mass number of an atom. The total of protons and neutrons makes up this number. The mass number of an atom is typically written in scientific writing above the symbol for the atom. The mass number identifies the element and isotope of an atom when combined with the atomic number, or the number of protons.
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