Bruno Mars’ “Grenade” spends its fourth week at No. 1 on the Billboard Hot 100 singles chart, though it’s the single’s first back-to-back appearance on top. Pink’s “F**kin’ Perfect” likely will take his spot soon, but until then, it rests at No. 2. And No. 3 is Katy Perry’s “Firework.”

Check out the rest of the top 10 after the jump.

Feb. 3, 2011′s Billboard hot 100 singles top 10

No. 1 – Bruno Mars, “Grenade”

No. 2 – P!nk’s “F**kin’ Perfect”

No. 3 – Katy Perry, “Firework”

No. 4 – Wiz Khalifa, “Black and Yellow”

No. 5 – Enrique Iglesias, “Tonight (I’m Lovin’ You)”

No. 6 – Rihanna, “What’s My Name?”

No. 7 – Pitbull, “Hey Baby (Drop It to the Floor)”

No. 8 – Britney Spears’ “Hold It Against Me”

No. 9 – Far*East Movement, “Rocketeer”

No. 10 – Ke$ha, “We R Who We R”

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