# Question #e63cd

Jun 8, 2017

$3.02 \cdot {10}^{-} 28$

#### Explanation:

$E = h \frac{c}{\lambda}$

$h$ - Plank's constant = $6.625 \cdot {10}^{-} 34$

$c$ - Speed of light = $3 \cdot {10}^{-} 8 m {s}^{-} 1$

$\lambda$ - Wavelength

E = $\frac{6.625 \cdot {10}^{-} 34 \cdot 3 \cdot {10}^{8}}{656.3}$

E = $3.02 \cdot 10 - 28 J$