Periodic Trends

Front

What is the periodic trend for atomic radius as you move across a period from left to right?

Back

The atomic radius decreases as you move from left to right across a period due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

Which element has the highest electronegativity?

Back

Chlorine (Cl) has the highest electronegativity among the given options.

Front

How does the atomic radius change 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

Which element has the smallest atomic radius?

Back

Helium (He) has the smallest atomic radius among the given options.

Front

What is true about noble gases?

Back

Noble gases have full outer electron shells, making them generally unreactive.

Front

Define atomic radius.

Back

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

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Explain the trend of electronegativity across a period.

Back

Electronegativity increases across a period from left to right due to increasing nuclear charge.

Front

Explain the trend of electronegativity down a group.

Back

Electronegativity decreases down a group due to increased distance between the nucleus and the valence electrons.

Front

What is the significance of full outer electron shells?

Back

Full outer electron shells contribute to the stability of an atom and are characteristic of noble gases.