Electrons in Atoms

Front

What happens during an electron transition from higher to lower energy level?

Back

It emits energy in the form of light, resulting in a line emission spectrum.

Front

Why are line emission spectra of elements referred to as 'atomic fingerprints'?

Back

Because each element has a unique line emission spectrum that can be used to identify it.

Front

Which element is the smallest in size among N, S, I, and Fr?

Back

Nitrogen (N) is the smallest in size.

Front

How do you determine the number of unshared pairs of electrons in an orbital diagram?

Back

Count the pairs of electrons that are not involved in bonding.

Front

What is the electron configuration for an atom with 15 electrons?

Back

1s² 2s² 2p⁶ 3s² 3p³.

Front

Define an electron's energy level.

Back

An energy level is a region around the nucleus where electrons are likely to be found.

Front

What is the significance of the line emission spectrum in identifying elements?

Back

It allows scientists to determine the composition of distant stars and other celestial bodies.

Front

Explain the concept of fixed energy states for electrons.

Back

Electrons exist in specific energy levels and cannot exist between these levels.

Front

What is the relationship between electron transitions and the emission of light?

Back

When electrons transition from a higher to a lower energy level, they release energy as light.

Front

What does the term 'unshared pairs of electrons' refer to?

Back

Unshared pairs of electrons are pairs that are not involved in bonding with other atoms.