C3 - Group 7: The Halogens Flashcards Preview

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Flashcards in C3 - Group 7: The Halogens Deck (10):
1

Why do Group 7 elements become less reactive as you go down?

It gets harder to gain an electron because the outer shell is further from the nucleus.

2

What properties do the halogens have as you go further down the Group?

Higher melting/boiling point.

3

What is fluorine and how reactive is it?

It is a poisonous yellow gas.

It is very reactive.

4

What is chlorine and how reactive is it?

It is a poisonous dense green gas.

It is fairly reactive.

5

What is bromine?

A dense, poisonous, red-brown volatile liquid.

6

What is iodine?

A dark grey solid or purple vapour.

7

What do halogens exist as?

Molecules which are pairs of atoms.

8

What bond do halogens form with metals?

Ionic bonds.

9

What ions do halogens form when bonding with metals, and what are they called?

1- ions called halides.

10

What happens as you go down Group 7?

The elements become less reactive.