The number of electrons is equal to the number of protons which determines it's atomic number. Therefore, the element with 3 electrons is the one with 3 protons which has an atomic number of three which is Lithium (symbol - Li, amu - 6.941)
The element is helium, with symbol He.
The chemical symbol of uranium is U. Uranium has 92 electrons.
B and 5 electrons
A and 12
For an neutral element that has the same number of electrons and protons, the element with 11 electrons is Na, sodium.
The number of electrons is equal to the number of protons which determines it's atomic number. Therefore, the element with 3 electrons is the one with 3 protons which has an atomic number of three which is Lithium (symbol - Li, amu - 6.941)
Tellurium element has 52 electrons.It has symbol Te.
The element is helium, with symbol He.
The chemical symbol of uranium is 'U' and it has 92 electrons.
Number protons equal to atomic number. So the element is Helium
The chemical symbol of uranium is U. Uranium has 92 electrons.
B and 5 electrons
A and 12
The chemical symbol of chlorine is Cl. Atomic number of it is 17. It has 17 electrons.
1. The number of a chemical element in the Periodic Table. 2. The number of protons of this chemical element. 3. The number of electrons (in neutral state) of this element. 4. Also the atomic number is proportional to the atomic weight.
The symbol of a boron atom is "B", and the number of electrons in a neutral atom is the same as the number of protons, which equals the atomic number of boron: 5.