Atomic Radius and Ionization Energy Flashcard

Front

What happens to the first ionization energy of Group 1 elements as you move down the group?

Back

The first ionization energy decreases as you move down the group.

Front

Why does the first ionization energy decrease down Group 1 elements?

Back

One reason is that the distance between the valence electron and the nucleus is increasing.

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 the atomic radius change across a period in the periodic table?

Back

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

Front

What causes the atomic radius to decrease across a period?

Back

The increase in nuclear charge without a corresponding increase in shielding effect pulls the electrons closer to the nucleus.

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius increases, ionization energy decreases.

Front

How does the atomic radius of a sodium atom compare to that of a magnesium atom?

Back

The atomic radius of a sodium atom is larger than that of a magnesium atom.

Front

Why is the atomic radius of magnesium smaller than that of sodium?

Back

Magnesium has a larger nuclear charge, which pulls the electrons closer to the nucleus.

Front

What is the effect of increasing principal energy levels on atomic radius?

Back

Increasing principal energy levels generally leads to an increase in atomic radius.

Front

What is nuclear charge?

Back

Nuclear charge is the total charge of the nucleus, determined by the number of protons.