Electrons in the highest energy level of an atom are called _______. (1) valence protons (2) orbital protons (3) valence electrons (4) orbital electrons

Electrons in the highest energy level of an atom are called _______. (1) valence protons (2) orbital protons (3) valence electrons (4) orbital electrons
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(3) valence electrons Explanation: The outermost orbital shell of an atom is called its valence shell, and the electrons in the valence shell are valence electrons.
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Description : A substance emits energy which is detected as a line emission in the visible region using a spectroscope. The origin of this energy is (a) Vibrational energy of the molecules (b) Rotational energy of the molecules (c) Energy of orbital electrons (d) Energy of protons in the nucleus.

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The mass number of an atom is equal to (a) The number of protons (b) The number of protons and electrons (c) The number of nucleons (d) The number of neutrons

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All of the followings are particles of the atom except D A. Electrons B. Protons C. Neutrons D. Pentagon

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(2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that of valence electron but the mobility is the same. Even for the same electric field, valence electrons cannot move as freely as the free electrons because its movement is restricted due to collisions. Therefore, the velocity of valence electrons is less compared to free electrons. In other words, the velocity of holes is less compared to free electrons. This means mobility is also less for a hole compared to free electron.

Description : (2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that ... to free electrons. This means mobility is also less for a hole compared to free electron.

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Last Answer : (3) different atomic number and different number of valence electrons Explanation: Each element's atoms have a different number of protons, neutrons, and electrons, which is why they have different ... Their reactivity also varies because of the number and activeness of the electrons in the atom.