Periodic Table Trends

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What is the periodic trend for atomic radius across a period?

The atomic radius generally decreases across a period from left to right.

How does atomic radius change down a group?

Atomic radius increases as you move down a group.

What is ionization energy, and how does it trend across a period?

Ionization energy generally increases across a period from left to right.

Describe the trend in ionization energy down a group.

Ionization energy decreases as you move down a group.

What trend is observed in electronegativity across a period?

Electronegativity generally increases across a period from left to right.

How does electronegativity change down a group?

Electronegativity decreases as you move down a group.

What is electron affinity, and how does it trend across a period?

Electron affinity generally becomes more negative across a period from left to right.

Describe the change in electron affinity down a group.

Electron affinity becomes less negative as you move down a group.

What is the trend for metallic character across a period?

Metallic character decreases across a period from left to right.

How does metallic character change down a group?

Metallic character increases down a group.

What is the trend in density across the periods of the periodic table?

Density generally increases up to the middle of the period and then decreases.

How does reactivity vary for metals down a group?

Reactivity of metals generally increases down a group.

Describe the trend for non-metal reactivity down a group.

Reactivity of non-metals generally decreases down a group.

What is the periodic trend for atomic number?

Atomic number increases from left to right across a period and top to bottom down a group.

How are periods and groups arranged on the periodic table?

Periods are horizontal rows, and groups are vertical columns on the periodic table.

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