Periodic Table Trends

Front

What is the atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which element has the largest atomic radius among potassium, rubidium, francium, and cesium?

Back

Francium has the largest atomic radius.

Front

How does atomic radius change as you move down a group in the periodic table?

Back

Atomic radius increases as you move down a group due to the addition of energy levels.

Front

What is the trend of atomic radius across a period from left to right?

Back

Atomic radius decreases from left to right across a period.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How do the number of valence electrons affect an element's reactivity?

Back

Elements with fewer valence electrons tend to be more reactive, as they are more likely to lose electrons.

Front

Which element has the fewest valence electrons: beryllium (Be), sodium (Na), oxygen (O), or neon (Ne)?

Back

Sodium (Na) has the fewest valence electrons.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom.

Front

How does ionization energy change across a period?

Back

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

Front

What is electronegativity?

Back

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