Chapter 28, Problem 43A

To determine

The evidence for the claim that iron exists in the atmosphere of the sun.

Explanation of Solution

Introduction:

The Sun is a star in the solar system. The nuclear fusion reaction in the sun radiates energy in the form of light and infrared radiation.

The Sun is a star present at the centre of the solar system and made up of hydrogen and helium. Also, it contains iron that is at its core.

When the spectrum of iron element is compared with that of the Sun’s spectrum, all the spectrum lines are overlapped and perfectly matched. So, it is evident that iron exists in the Sun’s atmosphere.

Conclusion:

The spectral lines of the sun match with the spectral lines of iron.