[amp_mcq option1=”Gained a proton” option2=”Lost a proton” option3=”Gained an electron” option4=”Lost an electron E. None of the above” correct=”option2″]
The answer is B. Positive ions are atoms that have lost an electron.
An atom is made up of three types of subatomic particles: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus of the atom, while electrons orbit the nucleus. The number of protons in an atom determines its chemical element. For example, all atoms that have 6 protons in their nucleus are carbon atoms.
The number of electrons in an atom is equal to the number of protons in the nucleus. This is because atoms are electrically neutral, meaning that they have an equal number of positive and negative charges. However, atoms can gain or lose electrons, which changes their electrical charge.
An atom that has lost an electron has a positive charge. This is because the atom now has more protons than electrons. A positive ion is also called a cation.
An atom that has gained an electron has a negative charge. This is because the atom now has more electrons than protons. A negative ion is also called an anion.
In summary, positive ions are atoms that have lost an electron. This gives them a positive charge.