Periodic Trends

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons are found in atoms of group 15?

Back

5

Front

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

Back

Atomic size increases because atoms have more energy levels.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

How does ionization energy change as you move down a group in the periodic table?

Back

Ionization energy decreases as you move down a group.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

How does electronegativity change as you move across a period?

Back

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

Front

Which element has a greater ionization energy: Magnesium (Mg) or Phosphorus (P)?

Back

Phosphorus (P) has a greater ionization energy.

Front

What group in the periodic table has the greatest number of valence electrons?

Back

Group 18 has the greatest number of valence electrons.

Front

What is the trend in atomic radius as you move across a period?

Back

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