A-level Chemistry/OCR (Salters)/Constants

< A-level Chemistry‎ | OCR (Salters)
Constant Symbol for constant Value Unit(s)* Symbol for unit(s)
Avogadro's number L 6.02 × 1023 mol−1 reciprocal moles
Planck's constant h 6.63 × 10−34 J Hz−1 joules per hertz
speed of light c 3 × 108 m s−1 metres per second

* Note that SI units are shown in bold