What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Next Number in the Series,

5, 16, 49, 104, ?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

10+10 and 11+11 can give you the same answer.

Explain how?

I shave every day, but my beard stays the same. What am I?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?