Periodic Trends Practice

Front

What is a covalent bond?

Back

A covalent bond is the sharing of electron pairs between atoms.

Front

Which of the following compounds forms a covalent bond? MgCl, CO₂, KBr, CaO

Back

CO₂ forms a covalent bond.

Front

What is an ionic bond?

Back

An ionic bond is formed through the transfer of electrons from one atom to another, resulting in the attraction between oppositely charged ions.

Front

Which of the following compounds forms an ionic bond? MgCl, CO₂, H₂O, NH₄

Back

MgCl forms an ionic bond.

Front

What is the atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which element has the largest atomic radius in Group 18? Ar, He, Kr, Rn

Back

Rn (Radon) has the largest atomic radius in Group 18.

Front

What is the trend of atomic radius across a period?

Back

The atomic radius decreases across a period from left to right due to increasing nuclear charge.

Front

What is the trend of atomic radius down a group?

Back

The atomic radius increases down a group due to the addition of electron shells.

Front

What are Lewis dot diagrams used for?

Back

Lewis dot diagrams are used to represent the valence electrons of an atom and to visualize bonding between atoms.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract electrons in a chemical bond.