Beryllium has 4 protons, 5 neutrons, and 4 electrons
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)
As you already know the atom consists of protons, neutron and eletrons. The number of protons determins which chemical element it is, and on the periodic table of elements, we can see that the next element after lithium is beryllium.-An atom with 3 protons, 3 neutrons, and 3 electrons.- An atom with 3 protons, 5 neutrons, and 3 electrons
Beryllium
3 protons, 4 neutrons and 3 electrons
I've edited the question so it makes any sort of sense. The answer would be 4 electrons. You need an equal number of electrons and protons to be neutral. Neutral just means neither positive or negative. Electrons are -1 and protons are +1. The only way to not be particularly one or the other is to have them both in equal amounts.
The element lithium has 3 protons and 3 electrons.
Lithium has three protons and three electrons. The number of electrons always equals the number of protons. Lithium has two isotopes, one with three neutrons and one with four neutrons.
Lithium ion is Li^1+ and the number of protons is 3 and the number of electrons is 2.
all atoms have same number of protons and electrons and hence are neutral. lithium has 3 protons and 3 electrons
The atomic number of Lithium is 3. That means there are 3 protons and 3 electrons.
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)
In a neutral atom of lithium-7, the number of protons equals the number of electrons. The atomic number of lithium is 3, which is the number of protons. So a neutral atom of lithium-7 has 3 protons and 3 electrons.
lithium has 3 protons which would also be 3 electrons.
Lithium has the atomic number of 3, which means it has 3 protons, and a neutral atom of lithium has 3 electrons.
3 protons 4 neutrons 3 electrons
An atom of lithium isotope 6Li has 3 electrons and 3 protons and 3 neutrons.
A lithium ion has three protons and 2 electrons - Li+. A neutral lithium atom has 3 electrons, but loses one to form an ionic bond with a non-metal.