Magnesium
A glance at the periodic table will tell you that Beryllium, atomic #4, has 4 protons in its nucleus.
How many protrons and neutrons does silicon have in the nucleus?
Each atom of the element magnesium contains exactly 12 protons.
The second element in Period 3 is Magnesium, with an atomic number of 12.
The element with a mass number of 12 is carbon. Carbon has an atomic number of 6.
they provide a positive charge for the element
Sodium does.
The number of protons is the atomic number of the element.
there are 12
Protons are components of the atomic nucleus of any chemical element.
Oxygen isotope 16
The number of protrons of whichever element you choose. Each element has an exact number of protrons.
Lithium is a metal element. There are 3 electrons in a single atom.
Magnesium is a metal element. There are 24 electrons in a single atom.
There are 67 protons in holmium. The atomic number of an element is the same as the number of protons.
Neon is a non metal element. There are 19 electrons in a single atom.
There are 26 protons and hence the atomic number is 26 and the element is iron.