Does an increase in the number of electrons around the nucleus of an atom ALWAYS increase the size of the atom? Use CER, claim, evidence, reasoning. Your claim is your answer to the question. Evidence should be pulled from the periodic table. Include reasoning this should come after your evidence. Notes: Across a period: Even though there are more electrons, there also more protons. This results in more electrostatic attraction which pulls all the orbitals in tighter. Down a group: At the beginning of each new period, atoms have an additional orbital to provide room for additional electrons. The edditional orbital results in a much larger atom. Atoms get smaller across a period. Atoms get bigger down a group. When atoms absorb energy from their environment, the electrons move to higher energy orbitals farther from the nucleus. When atoms release energy to their environment in the form of visible-light, the elctrons move to lower energy orbitals closer to the nucleus. Period=number of orbitals Group A number = number of valence electrons Atomic radius is a measure of atomic size. Spans the distance from the nucleus to the valence orbital. Valence electrons are always located in the outermost orbital of an atom.
Electron Affinity
When an element undergoes a chemical reaction, it either gains energy or loses energy. This gain or loss of energy is due to the phenomena that occur at atomic level. During reaction, atoms either gain electrons from other atoms or lose electrons to other atoms, and in that process, energy is produced.
P-Block Elements
Elements which are present on the right side of the periodic table are called p-block elements. In addition to the noble gases, they include the families of boron, mercury, nitrogen, oxygen and fluorine. These elements have diverse real-life implementations that we regularly experience around us.
Metals and Non-metals
The periodic table is composed of metals, semi-metals and nonmetal elements. The physical and chemical properties of metals and nonmetals differ from each other. The study of metals and nonmetals will help one to understand the appropriate application of the particular element.
Does an increase in the number of electrons around the nucleus of an atom ALWAYS increase the size of the atom? Use CER, claim, evidence, reasoning. Your claim is your answer to the question. Evidence should be pulled from the periodic table. Include reasoning this should come after your evidence.
Notes:
Across a period: Even though there are more electrons, there also more protons. This results in more electrostatic attraction which pulls all the orbitals in tighter.
Down a group: At the beginning of each new period, atoms have an additional orbital to provide room for additional electrons. The edditional orbital results in a much larger atom. Atoms get smaller across a period. Atoms get bigger down a group.
When atoms absorb energy from their environment, the electrons move to higher energy orbitals farther from the nucleus. When atoms release energy to their environment in the form of visible-light, the elctrons move to lower energy orbitals closer to the nucleus.
Period=number of orbitals
Group A number = number of valence electrons
Atomic radius is a measure of atomic size. Spans the distance from the nucleus to the valence orbital. Valence electrons are always located in the outermost orbital of an atom.
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