Question

1. the element with atomic number 53 always contains (3pts)

□ 53 neutrons.
□ 53 protons.
□ 26 neutrons and 27 protons.
□ 26 protons and 27 neutrons.

Explanation:

The atomic number of an element is defined as the number of protons in the nucleus of its atom, and this value is fixed for a given element. Neutron counts can vary between isotopes of the same element, so they are not always constant.

Answer:

53 protons.