From the Periodic Table, potassium has an atomic number of 19. This means that potassium atoms have 19 protons in their nuclei. In a neutral atom, the number of protons equals the number of electrons. Therefore, potassium atoms have 19 electrons. Mass number is the sum of protons and neutrons in the nucleus of an isotope. If you know the mass number and number of protons, subtract the number of protons from the mass number. In the case of potassium-31, the mass number is 31. So, subtract 19 from 31 and you get 12, which is the number of neutrons.
So the atoms of potassium-31 has 19 protons, 19 neutrons, and 12 neutrons.
7 protons, 7 neutrons and 7 electrons
it has 44 electrons 57 neutrons and 44 protons
4 protons, 4 electrons and 6 neutrons.
The phosphorus atom has 15 protons and electrons and 16 neutrons.
Sodium has 11 protons, 11 electrons and 12 neutrons.
18 protons 18 electrons 22 neutrons
18 protons and electrons and 22 neutrons.
Cesium has 55 protons, 78 neutrons, and 55 electrons.
61 neutrons 10 electrons 46 protons
There are 19 protons,20 neutrons, and 19 electrons.
7 protons, 7 neutrons and 7 electrons
50 electrons, 50 protons and 56 neutrons.
67 protons, 67 electrons and 98 neutrons
4 protons, 4 electrons and 6 neutrons.
Neutrons: 58 Electrons: 45 Protons: 45
4 protons, 4 electrons and 5 neutrons
it has 44 electrons 57 neutrons and 44 protons