G7 15-12

The smallest atomic number of an element whose electrons revolve in

three energy levels in its normal state.?

Chlorine is a gaseous element with a boiling point lower than 25°C

• false

• true

The atomic radius increases in the same group as the atomic number increases.

• False

• True

Both alkali metals and halogens are monovalent

• False

• True

The first four elements in group 4A have the same

• melting and boiling points.

• number of energy levels.

• atomic radius.

• number of electrons in the first and last energy levels.

The 4th period contains elements from the blocks

• s, p, d and f

• s, f and p

• s, d and p

• s and p

Among nonmetals is ...... element.

• bromine

• Stronuim

• Soduim

• magnesium

Write scientific term

The number of unpaired electrons in the Lewis structure of an element

Write scientific term

A table in which elements are arranged in ascending order based on their atomic numbers and the method of filling of the energy sublevels with electrons.

The smallest atomic number of an element whose electrons revolve in three energy levels in its normal state.