Periodic Trends

Front

What is the trend in atomic radius across a period in the periodic table?

Back

Atomic radius decreases from left to right across a period due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is the trend in atomic radius down a group in the periodic table?

Back

Atomic radius increases down a group because additional electron shells are added, increasing the distance between the nucleus and the outermost electrons.

Front

What is electronegativity?

Back

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

Front

What is the trend in electronegativity across a period?

Back

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

Front

What is the trend in electronegativity down a group?

Back

Electronegativity decreases down a group because the increased distance of the outer electrons from the nucleus reduces the nucleus's ability to attract electrons.

Front

Which halogen has the smallest atomic radius?

Back

Fluorine (F) has the smallest atomic radius among the halogens.

Front

Which alkaline-earth metal has the smallest electronegativity?

Back

Radium (Ra) has the smallest electronegativity among the alkaline-earth metals.

Front

Which group 13 element is the largest?

Back

Titanium (Ti) is the largest among the group 13 elements.

Front

Which element in Period 2 has the greatest atomic radius?

Back

Lithium (Li) has the greatest atomic radius in Period 2.

Front

Which element in the Lanthanide Series has the largest atomic radius?

Back

Cerium (Ce) has the largest atomic radius in the Lanthanide Series.