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What is a region around the nucleus in which electrons move about?
Electrons surround the nucleus of an atom in patterns called electron shells.
Which is more massive an atoms nucleus or an atoms electron cloud?
The nucleus, consisting of protons and neutrons, is much more massive than the electrons.
Is the electron cloud the most massive part of the atom?
No, it is not. Almost all of the mass of an atom is located in the nucleus. The proton, that carrier of the positive electrical charge, is some 1836 times more massive that the negatively charged electron that it attracts to "build" an atom. If we take a look, we'll find that in a simple hydrogen-1 atom, a single proton is in the nucleus and a lone electron makes up the electron cloud. And the nucleus is about 1836 times more massive than the "rest" of the atom. In a helium-4 atom, two protons and two neutrons form the nucleus and a pair of electrons form the electron cloud. In this case, the nucleus is about 7,444 times as massive as the electrons. As we move up the periodic table, the figure gets even more lopsided.
Why does the separation of an electron from the neutral atom require more enery than the separation of an electron from the anion?
An explanation is via the electron cloud. In a neutral atom, equal number of electrons and protons means a stable separation of electrons from the nucleus and each electron is repulsed by the adjacent electrons at a stable distance. When one electron is removed forming an anion, the electron cloud will move closer to the nucleus because of lower electron repulsion (fewer competitors), and each electron is held more strongly by the protons. Since the force of attraction of proton-electron is stronger than before, removing the second electron will require even more energy than removing the first electron. ==========================
In an atom an electron that is close to the nucleus is on the highest enegry level?
No. The greater distance from the nucleus the more energy an electron has.
How does the mass of the nucleus compare to the mass of the electron?
The nucleus is far more massive than the electron cloud. The mass of the electron cloud is almost negligible compared to that of the nucleus.
Which has more mass nucleus or electron cloud?
The nucleus by far.
What is a region around the nucleus in which electrons move about?
Electrons surround the nucleus of an atom in patterns called electron shells.
Where is a electron?
In atoms. More specifically, they orbit the nucleus of an atom, in the aptly name electron cloud. Or electron shell.
Which is more massive an atoms nucleus or an atoms electron cloud?
The nucleus, consisting of protons and neutrons, is much more massive than the electrons.
What is the electron cloud called?
Not exactly. An electron is an actual physical particle with a negative charge. An electron cloud is (generally) a spherical area around the nucleus of an atom that predicts where the electrons might be located.
Is the electron cloud the most massive part of the atom?
No, it is not. Almost all of the mass of an atom is located in the nucleus. The proton, that carrier of the positive electrical charge, is some 1836 times more massive that the negatively charged electron that it attracts to "build" an atom. If we take a look, we'll find that in a simple hydrogen-1 atom, a single proton is in the nucleus and a lone electron makes up the electron cloud. And the nucleus is about 1836 times more massive than the "rest" of the atom. In a helium-4 atom, two protons and two neutrons form the nucleus and a pair of electrons form the electron cloud. In this case, the nucleus is about 7,444 times as massive as the electrons. As we move up the periodic table, the figure gets even more lopsided.
The volume of an atom is determined by the size of its?
It can be determined by the size of it's electron. The reason for this being is because of the mass that is calculated by the protons to the neutrons of the atoms within the nucleus.
What is found in the electron cloud of an atom?
I think the word you're looking for is "electron cloud". That term already describes where electrons are found. It would be kind of silly to define "electron cloud" in such a way that it describes an area where electrons are not found, wouldn't it?
In the electron cloud model if you begin at the electron shell closest to the nucleus of an atom and move out what is the number of electrons that each energy level or electron shell needs to fil?
2, 8, 18, 32 more
Why does the separation of an electron from the neutral atom require more enery than the separation of an electron from the anion?
An explanation is via the electron cloud. In a neutral atom, equal number of electrons and protons means a stable separation of electrons from the nucleus and each electron is repulsed by the adjacent electrons at a stable distance. When one electron is removed forming an anion, the electron cloud will move closer to the nucleus because of lower electron repulsion (fewer competitors), and each electron is held more strongly by the protons. Since the force of attraction of proton-electron is stronger than before, removing the second electron will require even more energy than removing the first electron. ==========================
How does the mass of an electron compare to that of a neutron?
The nucleus is far more massive than the electron cloud. The mass of the electron cloud is almost negligible compared to that of the nucleus.
