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Help With Chemistry (1 Viewer)
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Kujah
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1. The kinetic theory of matter states that all matter us made up of tiny particles that are continuously moving and interacting with each other. Matter can be classified in three states: solids, liquids and gases. These different forms have their own structural and physical properties.
2. The atom is described as having electrons existing in stable energy levels at different radial distances from the nucleus. These energy levels are known as “electron shells.” Electron shells are numbered from the inner parts of the atoms outwards, and the maximum electron population of each shell is determined by the formula, 2n2. The outer electron shell is called the valence shell, and the pattern of arrangement of electrons in each shell is referred to as the electron configuration.
Electrons fill the lowest energy levels first, and each shell has a symbol. The shells are known as K, L, M, N and O. They each respectively have a limited amount of electrons in their own shell.
Furthermore, there are sub-shells within these electron levels. They are known as the s, p, d and f sub-shells, and each have their limits. When drawing out the electrons in these sub-shells, scientists give electrons a sign resembling half arrows.
Group I and II known as s-groups, as their valence electrons are filled in the sub-shells. Furthermore, transition metals are known as d-groups.
2. The atom is described as having electrons existing in stable energy levels at different radial distances from the nucleus. These energy levels are known as “electron shells.” Electron shells are numbered from the inner parts of the atoms outwards, and the maximum electron population of each shell is determined by the formula, 2n2. The outer electron shell is called the valence shell, and the pattern of arrangement of electrons in each shell is referred to as the electron configuration.
Electrons fill the lowest energy levels first, and each shell has a symbol. The shells are known as K, L, M, N and O. They each respectively have a limited amount of electrons in their own shell.
Furthermore, there are sub-shells within these electron levels. They are known as the s, p, d and f sub-shells, and each have their limits. When drawing out the electrons in these sub-shells, scientists give electrons a sign resembling half arrows.
Group I and II known as s-groups, as their valence electrons are filled in the sub-shells. Furthermore, transition metals are known as d-groups.