Periodic Trends

Front

What is electronegativity?

Back

Electronegativity is an atom's tendency to attract electrons to itself when it is chemically combined with another element.

Front

Why do atoms get smaller as you move across the periodic table?

Back

Atoms get smaller because they have more protons and a stronger nuclear force, which pulls the electrons closer to the nucleus.

Front

What happens to atomic size as you move down the periodic table?

Back

Atoms get bigger because they have more energy levels, which increases the distance between the nucleus and the outermost electrons.

Front

Which group in the periodic table has the smallest atomic radius?

Back

Noble Gases have the smallest atomic radius.

Front

What characterizes atoms with high electronegativity?

Back

Atoms with high electronegativity hold on to their electrons more tightly.

Front

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

Back

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

Front

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

Back

The atomic radius increases as you move down a group.

Front

What is electron affinity?

Back

Electron affinity is the amount of energy released when an electron is added to a neutral atom.

Front

What is the relationship between atomic number and electronegativity?

Back

Generally, electronegativity increases with increasing atomic number across a period.

Front

What are alkali metals known for?

Back

Alkali metals are known for having a single electron in their outermost shell, making them highly reactive.