Periodic Trends

Front

What is the trend in atomic radius as you move across a period from left to right?

Back

The atomic radius decreases as you move across a period from left to right.

Front

What is the trend in atomic radius as you move down a group in the periodic table?

Back

The atomic radius increases as you move down a group in the periodic table.

Front

What are groups in the periodic table?

Back

Groups are vertical columns of elements that have similar properties.

Front

What are periods in the periodic table?

Back

Periods are horizontal rows of elements in the periodic table.

Front

Which element has the most valence electrons: Ca, C, Cl, or Si?

Back

Cl (Chlorine) has the most valence electrons.

Front

Why do atoms get larger as you move down a group?

Back

Atoms get larger because they have more energy levels.

Front

What is the relationship between atomic number and the number of protons in an atom?

Back

The atomic number of an element is equal to the number of protons in its nucleus.

Front

What is electronegativity?

Back

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

Front

How does electronegativity change across a period?

Back

Electronegativity increases as you move from left to right across a period.

Front

How does electronegativity change down a group?

Back

Electronegativity decreases as you move down a group.