Happy Person Raising One Hand: Also Known As, Answering Question Emoji, Hand Up Emoji.
Smiley face, eyes wide-open, right hand raised.
Raising: To move or elevate to a higher position.
Used if you want to bring to the attention of friend, or answer and ask a question, express joy at your meeting with an old friend.
* Approved as part of Unicode 6.0 in 2010.
* Added to Emoji 1.0 in 2015.