How many protons and neutrons does radium have?

Answer 1

88

Answer 2

The Atomic Mass is 226 (for the isotope 226Ra), and the number of protons is 88. Subtract the atomic mass from the number of protons.

226-88= 138 neutrons.

As a general rule, for all the isotopes of all chemical elements:

Number of neutrons = Atomic mass - Number of protons (Atomic number)

Answer 3

Radium has 88 protons.

Number of neutrons = Atomic mass of an isotope - 88

For example, the best known isotope of radium, 226Ra, has 138 neutrons.

Answer 4

Number of neutrons = Atomic mass of an isotope - 88

For the isotope 226Ra the number of neutrons is 138.

Answer 5

The isotope of radioactive radium with the longest half-life is radium-226. Radium-226 has a mass number of 226 with 88 protons and 138 neutrons.

Answer 6

Radium has 88 protons and 88 electrons.

Number of neutrons = Atomic mass of an isotope - 88

For example, the best known isotope of radium, 226Ra, has 138 neutrons.

Answer 7

Radium has 88 protons and typically around 138 neutrons, although the number of neutrons can vary slightly among different isotopes of radium.

Answer 8

Radium has 88 protons and 138 neutrons.

Answer 9

Radium has 88 protons.