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

How does atomic radius change 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

How does atomic radius change 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 a measure of an atom's ability to attract and hold onto electrons in a chemical bond.

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Front

How does electronegativity change across a period?

Back

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

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Front

How does electronegativity change down a group?

Back

Electronegativity decreases down a group because the increased distance between the nucleus and the outermost electrons reduces the nucleus's ability to attract electrons.

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Front

Which element has the highest electronegativity?

Back

Fluorine (F) has the highest electronegativity of all elements.

Front

What is the trend in ionization energy across a period?

Back

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

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the trend in ionization energy down a group?

Back

Ionization energy decreases down a group because the outermost electrons are further from the nucleus and are more easily removed.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell.

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