Valence Electrons and Chemical Bonds Quiz

Where is a valence electron found? A valence electron is found in the ______ of an atom.

• electron cloud

• outermost shell

• inner most shell

• centermost shell

How many valence electrons are in this given electronic configuration: 1s²2s²2p⁶ ?

• 2

• 6

• 8

• 10

Which of the following substances is an inert gas?

• 4Be

• 2He

• 1H

• 3Li

Which particles are involved in the formation of a chemical bond?

• protons in the nucleus

• neutrons in the nucleus

• electrons in the innermost shell

• electrons in the outermost shell

What holds atoms together to form a molecule?

• chemical bond

• electrostatic force

• nuclear force

• intermolecular force

In what way is the chlorine ion different from the chlorine atom? Chlorine ion __________ than the chlorine atom.

• is more stable

• has more protons

• has more electrons

• all of the above

What type of chemical bond is present in sugar (C₁₂H₂₂O₁₁)?

• chemical

• covalent

• ionic

• metallic

Which force of attraction affects the shape of the molecules of a compound?

• attractive

• chemical

• physical

• repulsive

When can we say that the shape of the molecule in a compound is unsymmetrical? It is unsymmetrical if ______.

• the same atoms are bonded to a central atom

• there is a uniform electrical distribution in the molecule

• the angles formed between bonding atoms are not equal

• the molecule has different atoms bonded to the central atom at varying angles and electrical distribution

Carbon monoxide (CO) is a colorless, odorless gas produced by incomplete combustion of fuel. What is the shape of a CO molecule?

• bent

• linear

• pyramidal

• v-shaped