No. Atoms can gain and lose electrons but seldom gain or lose protons.
gain
Gain or lose
If the chemical bond is ionic, an electron is gained or lost. If it is covalent, the electron is shared equally; if it is polar covalent, the electron is shared unequally. If the bond is intermolecular, no parts of the atom are actually shared, gained, or lost; the atom itself is simply attracted to other atoms.
The ion given is formed when the neutral arsenic atom gains three electrons.
Since this is a metal it is going to lose electrons. Metals lose the electrons while nonmetals gain electrons.
Aluminum would have to gain five.
The elemental state of aluminum tends to lose electrons. Its ionic state is 3+ which means it is most likely to lose up to 3 electrons.
Aluminum has an oxidation number of +3. It wants to get a full outer shell of 8. So it will either lose or gain electrons. It is easier to lose three electrons. If you lose electrons, it makes it positive.
No. Atoms can gain and lose electrons but seldom gain or lose protons.
Aluminum must lose 3 electrons to satisfy the octet rule. Once it does this, it becomes the Al+3 ion, and is isoelectronic with noble gas neon.
Covalent bonds do not gain or lose electrons, but rather share electrons.
It needs to gain 3 electrons than to lose 5 electrons. So phosphorus has to gain 3 electrons.
Lose
When atoms lose or gain electrons, they form ions. These are charged particles.
Se will gain electrons
In phosphene it gain 4 electrons. Phosphate lose 4 electrons