Periodic Table & Trends Test (Honors)

Front

What does the periodic law state about the properties of elements?

Back

The properties of elements are a periodic function of their atomic number.

Front

How many periods are there in the periodic table?

Back

There are 7 periods in the periodic table.

Front

What did Mendeleev predict about the empty spaces in his periodic table?

Back

Mendeleev predicted that the empty spaces represented undiscovered elements.

Front

Order the following elements from smallest to largest atomic radius: F, N, Li.

Back

F < N < Li.

Front

Which element has 3 valence electrons?

Back

Aluminum has 3 valence electrons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

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 are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.