In 1861 a Green Line Was Observed in the Spectrum

question 117

Multiple Choice

In 1861 a green line was observed in the spectrum of selenium ore that led to the discovery of the element thallium.Which of the following was responsible for the green line in the spectrum?

• A)excited electrons jumping to a higher energy level
• B)excited electrons dropping to a lower energy level
• C)excited protons jumping to a higher energy level
• D)excited protons dropping to a lower energy level
• E)none of the above

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Definitions:

Investment

Assets or items acquired with the goal of generating income or appreciation in the future.

Annual Effective Rate

The interest rate that is adjusted for compounding over a given period, showing the real return on savings or cost of borrowing.

Nominal Rate

The interest rate or rate of return quoted on a loan or investment, not adjusted for inflation.

Compounding Intervals

The frequency with which interest is added to the principal balance of an investment, affecting the total interest earned over time.