Emission spectra Multiple Choice cannot be used to identify an unknown atom. can be used to identify unknown atoms. can be explained by the movement of protons colliding with electrons. None of these choices.

Emission spectra can be used to identify unknown atoms.

Explanation:

Emission spectra -

Emission spectra refers to the series of frequencies of an electromagnetic radiations, which is radiated when an excited atom or molecule (i.e., the atom in the higher level of energy ), bounces back to its lower energy level, is called an emission spectra.

The main purpose of using a emission spectra is to determine any unknown atom.

Hence, from the given options of the question,

The correct statement regarding emission spectra is - can be used to identify unknown atoms.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

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tony (lordcaos066)

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.