Answer:
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Step-by-step explanation:
Just as how a rainbow sequence would go, so does the wavelength order which is how the rainbows are formed.
Red has 620-780 nanometers
Orange has 585-620 nanometers
Yellow has 570-585 nanometers
Green has 490-570 nanometers
Blue has 440-490 nanometers
Indigo has 420-440 nanometers
Violet has 400-420 nanometers