How does the photoelectric effect show that light has some properties of a stream of particles.

2 answers:

8 0

The photoelectric effect supports a particle theory of light in that it behaves like an elastic collision (one that conserves mechanical energy) between two particles, the photon of light and the electron of the metal.

BaLLatris [955]3 years ago

6 0

The photoelectric effect is the ability to knock electrons off of the atoms on the surface of a solid by shining a light at it. For some colors of light, it doesn’t matter how bright and intense the light is, no electrons separate from the solid. For other colors of light, it doesn’t matter how dim and weak the light is, electrons do separate from the solid. The dividing line between the colors that do and the colors that don’t is a certain wavelength of light, the one where each particle of light has at least enough energy to rio an electron away from an atom. If each particle of light has less energy than that, then no matter how many particles there are, they can’t separate electrons from their atoms. If each particle of light has more energy than that, than it doesn’t matter how few of them there are. A single particle can rip and electron away from the electron as it comes flying away from the surface.

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Determine if each statement is True or False. [ Select ] Central atoms with four electron groups will be sp3 hybridized. [ Selec

meriva

Answer:

Central atoms with four electron groups will be sp3 hybridized. True

Hybrid orbitals are delocalized over the entire molecule. False

The number of hybrid orbitals is equal to the number of atomic orbitals that are blended together. True

Atoms with a single pi bond and an octet are sp2 hybridized. True

Sometimes oxygen atoms will be sp3d hybridized in organic molecules. False

All resonance structures must be considered when assigning hybridization. False

Explanation:

When a central atom has four electron groups attached to it, then it must be sp3 hybridized. This is the case in ammonia, water, hydrogen sulphide, methane etc.

Hybridization is a valence bond concept while delocalization is a molecular orbital theory concept. Hybridized orbitals are localized on central atoms in a molecule while delocalized orbitals spread across the entire molecule.

According to valence bond theory, the number of atomic orbitals that combined to give hybrid orbitals must be equal to the number of hybrid orbitals formed.

When an atom has a single pi bond and on octet of electrons, then it must be sp2 hybridized. Remember that in ethene for instance, carbon has one pi bond and an octet of electrons.

Oxygen has an empty n=3 level hence it can not have d-orbitals involved in hybridization.

The electron domain geometry of the molecule is considered when assigning hybridization and not the resonance structures. All the resonance structures must have the central atom in the same hybridization state.

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3 years ago

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Varvara68 [4.7K]

Answer:

the answer of the questionis D Photons

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3 years ago

Who was martin Luther king and how is he celebrite

Anit [1.1K]

Answer: martin luther king jr

Explanation: He led peaceful protests against the discrimination that the people of the United State did against African American men, women, and children. He was a celebrity due to his have "I a dream speech" that he said in front of the lincoln memorial. Plus he didn't approve of violence when trying to protest African American rights.

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3 years ago

Describe in your own words the purpose of the balance scales and bar charts in the simulation.

Alex

Answer:

I hope this helps!!

Explanation:

The purpose is to physically show the process of the chemical reaction's balance.

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3 years ago

Complete combustion of 8.60 g of a hydrocarbon produced 26.5 g of CO2 and 12.2 g of H2O. What is the empirical formula for the h

amid [387]

The empirical formula of the hydrocarbon is $C_2H_3$ if combustion of 8.60 g of a hydrocarbon produced 26.5 g of $CO_2$ and 12.2 g of $H_2O$ .

<h3>What is an empirical formula?</h3>

A chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule $CH_2O$ is the empirical formula for glucose.