Answer:
3.99 × 10 ^-28
Step-by-step explanation:
In the equation of E = hc/λ, the h = 6.626 × 10^−34 J and c = 3 × 10^8 m/s
E = 6.626 × 10^−34 × 3 × 10^8 divided by 498
E = 3.99 × 10 ^-28
1.6m questions
2.0m answers