What does below chemistry rebus means?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Who are the happiest people in IPL match?

How far can you walk into the woods?

You need to arrange three 7 and mathematical symbols to form number 1?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

What jumps when it walks and sits when it stands?