What is an electron in the highest occupied energy level of an atom?

What is an electron in the highest occupied energy level of an atom?

Valence electrons are the electrons in the highest occupied principal energy level of an atom.

When an electron in an atom gains enough energy to escape from the atom?

If enough energy is absorbed, the electron can be completely removed from the atom—this is called ionization. The atom is then said to be ionized. The minimum amount of energy required to remove one electron from an atom in its ground state is called its ionization energy.

How is an electron dot diagram a useful model for focusing on the chemical properties of an element?

How is an electron dot diagram a useful model for focusing on the chemical properties of an element? An electron dot diagram shows the number of valence electrons. The chemical properties of an element depend on the number of valence electrons in its atoms.

When an atom gains an electron The atom will?

An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion (see page 10 for more on ions).

What happens to a neutral atom if it gains two electrons?

Answer. When atom A gains two electrons it forms an anion by developing 2 negative charges over it as there are 2 electrons more than the number of protons in the ion.

What happens to a neutral atom when it becomes a cation?

This means elements are electrically neutral because the charges from the protons and electrons cancel each other out. An ion is a charged atom. If the atom loses an electron, then there is more positive charge than negative charge, and the atom as a whole becomes a positively charged ion. This is called a cation.

What is the charge of an atom that loses 2 electrons?

When you are missing an electron or two, you have a positive charge. When you have an extra electron or two, you have a negative charge. – when an atom loses a valence electron, it loses a negative charge.

What is an atom that has no charge and loses two electrons?

Explanation: It is known that electrons hold a negative charge. Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.

What does a magnesium atom become when it loses two electrons?

Magnesium, Mg Magnesium is in Group 2. It has two electrons in its outer shell. When these electrons are lost, a magnesium ion, Mg 2+, is formed.