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According to me the atomic size of an atom increases or decreses with the change in the number of shells. As atomic size is defined as the distance between the nucleus and valence shell of an atom. So, the addition of an electron does not effect the atomic size. As we can see in the Periodic Table that while moving along a group the number of electrons increases along with increase in no. of shells, while the atomic size tends to be increase with addition of shells and neglecting the addition of electrons. Same is the case while moving along a period. Atomic size decreases while the attraction between increased nuleus charge increases . Thus the size of the atom decreases.
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What does atomic size depend on?
Atomic size depends primarily on the number of electron shells and the effective nuclear charge experienced by the outermost electrons. As you move down a group in the periodic table, atomic size increases due to the addition of electron shells, which outweighs the increase in nuclear charge. Conversely, across a period, atomic size generally decreases as the effective nuclear charge increases, pulling the electrons closer to the nucleus. Additionally, electron-electron repulsion in multi-electron atoms can also influence atomic size.
Why is barium bigger than beryllium?
Barium is larger than beryllium because it is located further down in Group 2 of the periodic table. As you move down a group, additional electron shells are added, increasing the atomic radius. Barium, with its higher atomic number, has more electron shells than beryllium, resulting in a larger size despite both elements having the same number of valence electrons. Additionally, the increased electron-electron repulsion in the larger electron cloud of barium contributes to its greater atomic size.
Why is it when an atomic number increases in a group the size of the atoms increase?
As the atomic number increases within a group, additional electron shells are added to the atom, leading to a greater distance between the outermost electrons and the nucleus. This increase in distance results in a larger atomic radius. Additionally, while the effective nuclear charge increases, the shielding effect from inner-shell electrons mitigates this attraction, allowing outer electrons to be held less tightly and thus increasing atomic size.
Why does francium have the biggest atomic size?
Francium is located on the bottom left side of the periodic table of elements. Meaning it has the largest number of electron shells and lowest electron negativity. Thus having the biggest atomic size.
What is the size order for these scientific particles Proton Neutron Atom Electron Nucleus?
IIRC Atoms (contains Protons/Neutrons and electrons) Nucleus contains Protons and Nuetrons Proton atomic size 1 Nuetron atomic size 1 electron atomic size 1/1836 i.e the proton is 1836 bigger than the electron
Why the atomic size of argon is more than chlorine?
The atomic size of an element is primarily determined by the number of electron shells and the effective nuclear charge experienced by the outermost electrons. In the case of argon and chlorine, argon has an additional electron shell compared to chlorine, resulting in a larger atomic size. This additional electron shell in argon leads to greater electron-electron repulsions that push the outer electrons farther away from the nucleus, increasing the atomic size.
What has a larger atomic radius sodium or potassium?
Potassium has a larger atomic radius than sodium. This is because as you move down a group in the periodic table, atomic size generally increases due to additional electron shells being added, leading to increased electron-electron repulsion and a larger atomic radius.
The addition of electron shells results in?
The addition of electron shells results in more shielding of electrons from the nucleus.
What effect does an additional proton have on atomic size?
An additional proton, in the same period (row) makes the radius smaller and the nucleus bigger. It also changes the element.
What does atomic size depend on?
Atomic size depends primarily on the number of electron shells and the effective nuclear charge experienced by the outermost electrons. As you move down a group in the periodic table, atomic size increases due to the addition of electron shells, which outweighs the increase in nuclear charge. Conversely, across a period, atomic size generally decreases as the effective nuclear charge increases, pulling the electrons closer to the nucleus. Additionally, electron-electron repulsion in multi-electron atoms can also influence atomic size.
Why is barium bigger than beryllium?
Barium is larger than beryllium because it is located further down in Group 2 of the periodic table. As you move down a group, additional electron shells are added, increasing the atomic radius. Barium, with its higher atomic number, has more electron shells than beryllium, resulting in a larger size despite both elements having the same number of valence electrons. Additionally, the increased electron-electron repulsion in the larger electron cloud of barium contributes to its greater atomic size.
What is the Atomic size of oxygen?
The atomic size of oxygen is approximately 60 picometers (pm). The atomic size refers to the distance from the nucleus to the outermost electron shell in an atom.
Why is it when an atomic number increases in a group the size of the atoms increase?
As the atomic number increases within a group, additional electron shells are added to the atom, leading to a greater distance between the outermost electrons and the nucleus. This increase in distance results in a larger atomic radius. Additionally, while the effective nuclear charge increases, the shielding effect from inner-shell electrons mitigates this attraction, allowing outer electrons to be held less tightly and thus increasing atomic size.
Why does francium have the biggest atomic size?
Francium is located on the bottom left side of the periodic table of elements. Meaning it has the largest number of electron shells and lowest electron negativity. Thus having the biggest atomic size.
What is the size order for these scientific particles Proton Neutron Atom Electron Nucleus?
IIRC Atoms (contains Protons/Neutrons and electrons) Nucleus contains Protons and Nuetrons Proton atomic size 1 Nuetron atomic size 1 electron atomic size 1/1836 i.e the proton is 1836 bigger than the electron
Why does F- has larger size than F?
Fluorine ion (F-) has a larger size than a neutral fluorine atom (F) because the additional electron in the F- ion increases the electron-electron repulsion, causing the electron cloud to expand. This results in a larger effective atomic radius for the fluorine ion compared to the neutral fluorine atom.
How does bromines atomic radius compared chlorine?
Bromine's atomic radii is larger than that of chlorine.
