Question

an ion composed of which of these particles would have a mass of approximately 16 amu and a charge of 2+? 8 protons and 8 electrons 8 protons, 8 neutrons, and 6 electrons 8 protons, 8 neutrons, and 10 electrons 8 protons, 8 neutrons, and 8 electrons

Explanation:

Step1: Calculate mass

Mass of an atom/ion is sum of protons and neutrons. Proton mass ≈ 1 amu, neutron mass ≈ 1 amu.
For option B: \(8 + 8=16\) amu (protons + neutrons).
Options A has no neutrons, mass is \(8\) amu. Options C and D: mass is \(8 + 8 = 16\) amu (same as B for mass - but check charge).

Step2: Calculate charge

Charge of ion = (number of protons) - (number of electrons).
Proton charge \(=+ 1\), electron charge \(=-1\).
For option B: \(8-6 = + 2\) (charge).
Option A: \(8 - 8=0\). Option C: \(8-10=-2\). Option D: \(8 - 8 = 0\).

Answer:

8 protons, 8 neutrons, and 6 electrons