Periodic Trends

Front

What is the trend in atomic radius across a period and down a group?

Back

Atomic radius decreases across a period and increases down a group.

Front

Which element has the most valence electrons in the following options: F, Cl, Br, I?

Back

Cl has the most valence electrons.

Front

How many valence electrons does a neutral atom of nitrogen have?

Back

A neutral atom of nitrogen has 5 valence electrons.

Front

Which element is more electronegative: F or Cl?

Back

Cl is more electronegative than F.

Front

What happens to the electronegativity of elements in Group 15 as you move from top to bottom?

Back

The electronegativity decreases as you move from top to bottom.

Front

Define atomic radius.

Back

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

Front

What is the general trend of electronegativity across a period?

Back

Electronegativity generally increases across a period.

Front

What is the general trend of electronegativity down a group?

Back

Electronegativity generally decreases down a group.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons are important because they are involved in forming bonds between atoms.