Different properties of Elements of the Periodic table by Andrew Kusuma

Alkali metal

andrew1605 — 2013-09-02 13:55:37 UTC

1. Softest metal

2. has very high density

3. the softness increase as you go down the group

4. They can float on water so they have less density

5. metals with very high melting point

6. The re activity with water increases as you go down the group

7. They have much lower melting and boiling point as compared to other metals

8. The melting and boiling point decreases as you go down the group.

9. the density increase as you go down the group

10. The boiling points increases as you go down the group.

11. the density increases as you go down the group

andrew1605 — 2013-09-02 13:55:47 UTC

1. They exist as diatomic molecules. For example Cl2.

2. They are poisonous non-metals.

3. They are reactive than other non-metal

4. the color gets darker as you go down the group

5. the reactivity with wool increase as you go down the group

andrew1605 — 2013-09-02 13:56:02 UTC

1. They are unreactive or inert

2. metals which form colored compounds

3. They are hard, strong and though solids

4. the element and their compound acts as catalysts

5. They have variable valency which means that they can for ions with different charges

6. metals with very high density

andrew1605 — 2013-09-02 13:56:18 UTC

1. They formed colored gases

2. They exist as single atoms so they are monatomic

3. They form colourless gases and occur naturally in air