1* Rude boy - Rihanna

2* Nothin' on you - B.o.B feat.Bruno mars

3* Hey, soul sister - Train

4* Need you now - Lady antebellum

5* Telephone - Lady gaga feat. Beyonce

6* Break your heart - Taio cruz feat. Ludacris

7* Imma back - The black eyed peas

8* Baby - Justin bieber feat. Ludacris

9* Bed rock - Young money feat. LIoyd

10* Tik tok - Ke$ha

source:
http://www.billboard.com/#/charts/hot-100?tag=chscr1