What is the symbol of a ion with a 22 protons, 34 neutrons, and 18 electrons

Well knowing the number of protons, you can find what the element is, which is Ti = titanium. Then to find the charge, simply subtract 22 and 18 which is + 3.

Find the mass number by adding 22 and 34 = 56.

56. + 3

Ti

22

This would be the correct notation in isotopic form.