Question

1.Name two soft metals that can be cut with a knife. 2. A non metal which is essential for life and can be inhaled during breathing. 3. Non metal used to disinfect water. 4. Purple coloured non metal which forum brown solution in alcohol and is applied on wounds as antiseptic. (Pls give exact answers :)

Answer 1

1-There is only two soft metal sodium and potassium
2- oxygen and nitrogen
3-chlorine
4The purple colour non metal is potassium