Periodic Table Questions

Formative Assesment 2

What are valence electrons?

What are valence electrons?

The electrons which are placed on the outermost energy level of an atom.

Given a Bohr-rutherford diagram, how can you decide the group number?

The group number is equal to the valence electron number of an atom.

Given a Bohr-rutherford diagram, how can you decide the period number?

The period number is equal to the number of shells of an atom.

What are the A group elements called?

They are called representative or the main group elements.

What are the B group elements called?

They are called the transition elements.

How many electrons do atoms in the noble gas group have?

Each of them has 8 valence electrons except He which has 2 valence electrons.

What is doublet rule?

It is an atom having 2 electrons in the first energy level.

What is octet rule?

It is an atom having 8 electrons in the last orbital.

Where are nonmetals placed on the periodic table?

Nonmetals are on the left side of the periodic table.

Where are metals placed on the periodic table?

Metals are on the right side of the periodic table.

How can an atom reach electron stabilization?

Electron stabilization is achieved when elements have a full valence electron.

If I need a good conductor, which type of element should I use? Metal, nonmetal, metaloid?

You should use metals.

What is the exception metal of the statement “Metals are solid at room temperature”?

Hg is the exception, it is liquid at room temperature.