Which Atom or Ion Produces Strong Absorption Lines in the Spectra

question 144

Multiple Choice

Which atom or ion produces strong absorption lines in the spectra of stars with relatively cool surface temperatures?

• A) TiO, molecules of titanium oxide
• B) Mg II, ionized magnesium
• C) Ca II, ionized calcium
• D) He I, neutral helium

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Definitions:

Rent Controls

Government-imposed limits on the rent landlords can charge tenants.

Rental Units

Housing accommodations that are leased to tenants, typically involving a payment made at regular intervals for the use of the property.

Surplus

An excess of supply over demand in a market, leading to lower prices or unused stock.

Price Control

Government-imposed limits on the prices that can be charged for goods and services in the market, to protect consumers and prevent market abuse.