Periodic Trends

Front

What is 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

Which element has the largest atomic radius in the alkali metals?

Back

Francium (Fr) has the largest atomic radius among alkali metals.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. It generally increases across a period and decreases down a group.

Front

Which element has a higher electronegativity than arsenic (As)?

Back

Carbon (C) has a higher electronegativity than arsenic (As).

Front

What is ionization energy?

Back

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

Front

Which element has the smallest ionization energy among Na, P, and S?

Back

Sodium (Na) has the smallest ionization energy among these elements.

Front

How does ionization energy change down a group in the periodic table?

Back

Ionization energy decreases as you move down a group in the periodic table.

Front

How does electronegativity change across a period?

Back

Electronegativity increases as you move from left to right across a period in the periodic table.

Front

What is the trend of atomic radius across a period?

Back

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

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius increases, ionization energy decreases because the outer electrons are further from the nucleus and are less tightly held.