Question

For hydrogen pick one isotope and give the number of protons and electrons.

A. 1 proton and 1 electron
B. 1 proton and 0 electrons
C. 2 protons and 2 electrons
D. 2 protons and 1 electron

Answer 1

The most common isotope of hydrogen, protium, has 1 proton and 1 electron.

Step-by-step explanation:

The answer is A. For hydrogen, the most common isotope is called protium, which has 1 proton and 1 electron. All atoms, including hydrogen, are neutral, meaning the number of electrons is equal to the number of protons. In the case of hydrogen, it has one proton in the nucleus and one electron outside the nucleus.