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)
A lithium atom contains three protons, three electrons, and usually four neutrons in its nucleus. The electrons occupy energy levels around the nucleus in a specific configuration.
Adding one proton to a lithium atom would result in the formation of a beryllium atom. Beryllium has 4 protons, 4 neutrons, and 4 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.
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
The element lithium has 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)
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.
A lithium atom contains three protons, three electrons, and usually four neutrons in its nucleus. The electrons occupy energy levels around the nucleus in a specific configuration.
Lithium has 3 protons, 4 neutrons, and 3 electrons.
Lithium ion is Li^1+ and the number of protons is 3 and the number of electrons is 2.
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.
The atomic number of Lithium is 3. That means there are 3 protons and 3 electrons.
All lithium atoms will have the same number of protons (3) but can have different numbers of neutrons, resulting in different isotopes of lithium. Electrons are the same for a neutral lithium atom (3 electrons), but ions of lithium can have a different number of electrons.
Lithium has the atomic number of 3, which means it has 3 protons, and a neutral atom of lithium has 3 electrons.
Lithium is element 3 on the periodic table and has 3 electrons and 3 protons
Lithium ions have three protons in their nucleus, as lithium's atomic number is 3. In terms of elections, a neutral lithium atom also has three electrons. However, when it is ionized to form a lithium ion (Li+), it loses one electron, resulting in two electrons. Thus, a lithium ion has three protons and two electrons.