Question

plz can sloved alll ​

Answer 1

Answer:

1. Diamond is the hardest substance

2. Noble metals are those metals which occur in free state, they do not combine with other metals. example gold, platinum..

3.lithium

4. iodine

5.Helium is the gas which is filled in air balloons..

HOPE THIS WILL HELP YOU.^_^....

plz mark brainliest