I think it's one but I'm not sure..

the is 1 one only

hope you know your answer now and thanks for asking me

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: