Question

calculate the atomic number of an element whose atomic nucleus has mass number 23 and neutron number 12. what is the symbol of the atom

Answer 1

Question #63608, Chemistry / Other

calculate the atomic number of an element whose atomic nucleus has mass number 23 and neutron number 12. what is the symbol of the atom

Answer:

$$A = Z + N$$

A – atomic nucleus mass

Z – atomic number or number of protons

N – number of neutrons in the nucleus

$$Z = A - N$$ $$Z = 23 - 12 = 11$$

11 is sodium. Isotope present in the question is:

$$\ce{23Na}$$

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