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. It generally increases down a group and decreases across a period.

Front

What are groups in the periodic table?

Back

Groups are the vertical columns in the periodic table where elements have similar chemical properties and the same number of valence electrons.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells in the elements.

Front

How many valence electrons does Potassium (K) have?

Back

Potassium (K) has 1 valence electron.

Front

What is the trend in atomic radius as you move down a group?

Back

The atomic radius increases as you move down a group due to the addition of electron shells.

Front

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

Back

The atomic radius decreases as you move from left to right across a period due to increased nuclear charge pulling electrons closer.

Front

What are transition metals?

Back

Transition metals are elements found in groups 3-12 of the periodic table, known for their ability to form variable oxidation states and colored compounds.

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond. It generally increases across a period and decreases down a group.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom. It increases across a period and decreases down a group.

Front

What is the significance of valence electrons?

Back

Valence electrons determine an element's chemical properties and its ability to bond with other elements.