7.1 Concepts Part 1

Emission spectrum is a possible _____ than can be emitted from a gas under high voltage.

• wavelengths

• energies

• radiations

... is the kinetic energy of electrons plus the electrical potential energy of the electrons and nucleus.

• Emission spectra

• Discrete energy

• Energy of the atom

• Absorption spectra

To calculate the energy of the emitted photon is

• E = hƒ = ∆E.L.

• E = hƒ

• E = ∆E.L.

• E = hc/ƒ = ∆E.L.

The picture represents

• emission spectra

• absorption spectra

• discrete energy

The picture represents

• different energies absorbed by protons of the gas

• different energies absorbed by electrons of the gas

• different energies emitted by electrons of the gas

• different energies emitted by protons of the gas

The picture represents

• different wavelengths absorbed by excited protons of the gas

• different wavelengths absorbed by excited electrons of the gas

• different wavelengths emitted by excited electrons of the gas

• different wavelengths emitted by excited protons of the gas

Choose the option were both options are true

• neutrons = 30 and nucleons = 56

• neutrons = 26 and nucleons = 56

• neutrons = 30 and nucleons = 26

Choose the option were both statements are true

• A = 56 and protons = 26

• A = 56 and protons = 30

• Z = 56 and protons = 26

• Z = 56 and protons = 30

This decay represents

• Alpha decay

• Beta minus decay

• Beta plus decay

• Gamma decay

The particle emitted in this decay is equivalent to

• Helium nucleus

• Helium electrons

• Helium protons

• Helium atoms