Periodic Table Trends

Front

What is electron affinity?

Back

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

Front

What happens to the force of attraction between protons and electrons as distance increases?

Back

The force of attraction decreases as the distance between protons and electrons increases.

Front

Why is hydrogen grouped with alkali metals in group 1 of the periodic table?

Back

Hydrogen is grouped with alkali metals because all group 1 elements have one valence electron.

Front

Which element has 2 valence electrons?

Back

Magnesium (Mg) has 2 valence electrons.

Front

What is the general 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 due to the addition of electron shells.

Front

What is ionization energy?

Back

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

Front

How does ionization energy change across a period from left to right?

Back

Ionization energy generally increases across a period from left to right due to increasing nuclear charge.

Front

What is the significance of valence electrons in determining chemical properties?

Back

Valence electrons determine how an element reacts chemically and its bonding behavior.

Front

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

Back

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

Front

What is the relationship between atomic size and electronegativity?

Back

As atomic size decreases, electronegativity increases because the nucleus has a stronger pull on the bonding electrons.