Question

a hydrogen - 1 atom is an isotope of hydrogen (h) with a mass number of 1. select the subatomic composition of a hydrogen - 1 atom. refer to a periodic table. 1 proton, 1 neutron, 0 electrons 1 proton, 1 neutron, 1 electron 1 proton, 0 neutrons, 1 electron 1 proton, 0 neutrons, 0 electrons

Explanation:

Hydrogen - 1 is the most common isotope of hydrogen. The atomic number of hydrogen is 1, which means it has 1 proton. The mass number is 1, and since mass number = protons + neutrons, it has 0 neutrons. A neutral atom has the same number of electrons as protons, so it has 1 electron.

Answer:

1 proton, 0 neutrons, 1 electron