Question

for the $^{18}$o (oxygen-18) isotope, how many protons, neutrons and electrons does the neutral atom have? periodic table image 8 protons, 18 neutrons, 8 electrons; 8 protons, 8 neutrons, 10 electrons; 10 protons, 8 neutrons, 8 electrons; 8 protons, 10 neutrons, 8 electrons

Explanation:

Step1: Determine the atomic number of oxygen

Oxygen (O) has an atomic number of 8 (from the periodic table). The atomic number equals the number of protons and, in a neutral atom, the number of electrons. So, protons = 8, electrons = 8.

Step2: Calculate the number of neutrons

The mass number of \(^{18}\text{O}\) is 18. The number of neutrons is calculated as mass number - atomic number, so \(18 - 8 = 10\) neutrons.

Answer:

8 protons, 10 neutrons, 8 electrons (the last option: 8 protons, 10 neutrons, 8 electrons)