Periodic Table and Trends

Front

What is electronegativity?

Back

Electronegativity is how good an atom is at attracting electrons.

Front

What is ionization energy?

Back

Ionization energy is the amount of energy required to remove an electron from an atom.

Front

Why do most atomic masses have decimal values?

Back

Most atomic masses have decimal values because they represent the average mass of all the potential isotopes of an atom.

Front

What is the common charge on an atom in group 17?

Back

The common charge on an atom in group 17 is -1.

Front

What is the relationship between electronegativity and atomic radius?

Back

Smaller atomic radius corresponds to higher electronegativity.

Front

Define atomic radius.

Back

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

Front

What trend is observed in atomic radius across a period?

Back

Atomic radius decreases across a period from left to right.

Front

What trend is observed in atomic radius down a group?

Back

Atomic radius increases down a group.

Front

What is the significance of the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

What is a group in the periodic table?

Back

A group is a vertical column in the periodic table that contains elements with similar chemical properties.