The Halogens in Group 7 of the Periodic Table

These flashcards cover key facts about the halogens in group 7 of the periodic table, including their states, colors, electron configurations, and trends in boiling points and electronegativity.

What are the physical states of the halogens as you move down group 7?

They go from gas at the top (fluorine, chlorine) to liquid (bromine) and solid at the bottom (iodine).

What is the color and state of Fluorine (F₂)?

Pale yellow gas.

What is the electron configuration of Chlorine (Cl₂)?

1s², 2s², 2p6, 3s², 3p5.

What happens to boiling points of halogens as you go down the group?

Boiling points increase due to increased London forces from larger atoms.

How does electronegativity change in group 7 as you move down?

Electronegativity decreases because of larger atom size and increased distance from the nucleus.

What is the physical state and color of Bromine (Br₂)?

Brown-orange liquid.

What is the chemical symbol and state of Iodine (I₂)?

Iodine (I₂) is a grey solid.

What is the significance of London forces in relation to halogens?

London forces increase with larger size and mass of the atoms, affecting boiling points.