chromium
to find the mass number add together the protons and neutrons, which each have a relative mass of one. electrons can be ignored as their relative mass is negligible (1/1836). So, 21 + 24 = 45 The element in question would be scandium
What is the Atomic Mass of atom with 23 protons 24 neutrons and 25 electrons? is it 72 actually its protons + neutrons = atomic mass, therefore it is 23+24= 47.
This element is scandium.
52
52
Because its atomic number is 21, it has 21 protons, 21 neutrons, and 21 electrons.
It is a radioactive scandium isotope - 43Sc with 21 electrons and protons, and 22 neutrons.
K always has 19 protons, because that is what defines it as an element.40, the atomic mass is the sum of protons and neutrons. So if you subtract the number of protons from the atomic mass, you get the number of neutrons.40-19=21 neutrons
Sc is actually atomic number 21, there are 21 protons, 21 electrons, and usually 24 neutrons
Lead has 125 neutrons It's element symblo is Pb
Because its atomic number is 21, it has 21 protons, 21 neutrons, and 21 electrons.
21 protons, 21 electrons and 23 neutrons
The atomic number of scandium is 21. So it has 21 protons and 21 electrons. Number of neutrons depends on the isotope. Number of neutrons = Mass number - Atomic number Sc-45 isotope has 24 neutrons
There are 21 electrons and protons in the element Cobalt, and there are 58.933195 neutrons or 36.933195. If your working on a project and your in elementary or middle school you are very smart.Well Done. -Emily (5th Grader)
21 protons, 21 electrons and 24 neutrons in 21Sc45 isotope.
It is a radioactive scandium isotope - 43Sc with 21 electrons and protons, and 22 neutrons.
K always has 19 protons, because that is what defines it as an element.40, the atomic mass is the sum of protons and neutrons. So if you subtract the number of protons from the atomic mass, you get the number of neutrons.40-19=21 neutrons
Titanium is the element having 22 protons and 21 neutrons. Its symbol is Ti.
Sc is actually atomic number 21, there are 21 protons, 21 electrons, and usually 24 neutrons
25 protons 25 electrons normally 30 neutrons but it can vary between 21 and 40.
Protons: 21 Neutrons: 29 Electrons: Normally 21
An element's number of protons is the same as its atomic number. Thus, an atom with 21 protons has the atomic number 21. By looking up this element on the periodic table, one finds that it is scandium.