'Grenade' tops U.S. record chart

LOS ANGELES, Dec. 30 (UPI) -- Bruno Mars's "Grenade" is No. 1 on the U.S. record chart, Billboard.com reported Thursday.

Coming in at No. 2 on the Billboard Hot 100 is Katy Perry's "Firework," followed by Ke$ha's "We R Who We R" at No. 3, Rihanna's "What's My Name?" featuring Drake at No. 4 and P!nk's "Raise Your Glass" at No. 5.

Rounding out the top tier are Wiz Khalifa's "Black and Yellow" at No. 6, Enrique Iglesias' "Tonight (I'm Lovin' You)" featuring Ludacris at No. 7, Trey Songz's "Bottoms Up" featuring Nicki Minaj at No. 8, The Black Eyed Peas's "The Time (Dirty Bit)" at No. 9 and Mars's "Just the Way You Are" at No. 10.