Lithium loses electrons.
In a neutral atom the number of electrons equals the number of protons (atomic number), so the atom in question would have 30 electrons.
the number of protons in an atom and the number of electrons in an atom
Atomic number of an element is equal to the number of protons it has in the nucleus of its atom. It is also equal to number of electrons for an electrically neutral atom. For instance, carbon which has atomic number 6 would have 6 protons and 6 electrons per atom.
An atom's atomic number is the number of electrons.
The number of protons in an atom is equal to its atomic number. In a neutral atom, the number of electrons is equal to that of protons. If the atom is negatively charged, add it to the number of electrons; and if positive, subtract.
In a neutral atom the number of protons is equal to the number of electrons. And by definition the atomic number of an atom is equal to the number of protons in it. So the atomic number of a neutral atom is equal to the number of protons or the number of electrons in the atom.
Atomic number of an atom shows the number of protons in the nucleus of the atom. OR Atomic number of an atom is the number of electrons in the atom when the atom neutrally charged
Atomic number = number of protons as well as the number of electrons in an atom.
The atomic number of an atom is its number of protons. For instance, a hydrogen atom has an atomic number of one, meaning there is one proton in one hydrogen atom. Also, as there are the same number of protons as there are electrons in a neutral atom, the atomic number can also be thought of as the number of electrons in an atom, as long as the atom's neutral.
Atomic numbers are the number of protons and electrons in a atom.
In a neutral atom, the number of electrons is always the same as the atomic number.
The number of protons is equal to atomic number; in a neutral atom the number of electrons is also equal to the numbers of protons.