Periodic Trends

Front

What is ionization energy?

Back

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

Front

Which element has the highest ionization energy: Al or Cl?

Back

Chlorine (Cl) has the highest ionization energy compared to Aluminum (Al).

Front

What happens to the size of an atom when it loses an electron?

Back

The size of the atom becomes smaller when it loses an electron.

Front

Why does Francium (Fr) have the lowest ionization energy in Group 1?

Back

Francium has the lowest ionization energy because its 1 valence electron is very far from the nucleus, requiring little energy to remove it.

Front

What happens to the size of an atom when it gains an electron?

Back

The size of the atom increases when it gains an electron.

Front

Which halogen has the smallest atomic radius?

Back

Fluorine (F) has the smallest atomic radius among the halogens.

Front

What is the trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right.

Front

What is the trend of atomic radius down a group in the periodic table?

Back

Atomic radius generally increases down a group in the periodic table.

Front

What is electronegativity?

Back

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

Front

How does electronegativity change across a period?

Back

Electronegativity generally increases across a period from left to right.