Nepal
Nepal has never won an official Olympic medal (or a gold medal). They did in fact however win a bronze medal in taekwondo at the Seoul Olympics in 1988, but unfortunately that came at a time when taekwondo was only an exhibition sport, so it is considered unofficial.
none
Leander Paes of India won the Bronze medal in 1996 Atlanta Olympics.
Yes Argentina have won a gold medal at the Olympics.
She has won a silver in 1998
She was 16 when she won her first medal. It was a silver medal.
Team, medal, hockey, olympics
Hungary won the gold medal in the Women's épée competition at the Rio 2016 Olympics.
Sweden won the gold medal in the Olympics.
Elena won a gold medal at the Beijing Olympics in 2008. She has also won a silver medal at the Sydney Olympics in 2000.
Yes