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The K shell is closest to the nucleus, and is the smallest shell, so when electrons are in that shell they are close to each other, and therefore also have a strong repulsion toward each other (since the electrostatic force varies inversely according to the square of the distance between two charged objects). The attractive force between the positive nucleus and the negative electrons is enough to hold two electrons in the K shell, but if a third electron were to enter that shell, the repulsive force between the three negatively charged electrons would be greater than the attraction that the electrons would have for the nucleus, and therefore one of the electons would be forced out of the shell.
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What element is the only noble gas that does not have eight electrons in its outer shell?
Helium is the only noble gas that does not have eight electrons in its outer shell. It has only two electrons in its outer shell.
What is the maximum number of electron the n 2 electron shell can hold?
8
How many electrons are in the first shell of beryllium?
Beryllium like every other element excluding hydrogen has 2 electrons in its first shell.
How many electrons can the first shell hold?
The first electron shell, or energy level only holds 2 electrons. It is the smallest and closest energy level to the atom's nucleus. Hydrogen and helium are the only two elements to have electrons in just the first shell.
Why can't hydrogen have more than 2 electrons in its valence shell?
Hydrogen's valence shell can only accommodate a maximum of 2 electrons because it has only one electron orbital available (1s orbital). This means that it can bond with only one other atom to fill its valence shell and achieve stability through a full outer shell.
What is the number of electrons that can be found in the 1st shell of neon?
The first shell of Neon, known as the K shell, can only hold two electrons. The first shell of any chemical element can only hold two electrons.
What element is the only noble gas that does not have eight electrons in its outer shell?
Helium is the only noble gas that does not have eight electrons in its outer shell. It has only two electrons in its outer shell.
How many atoms in the outer shell of a electrons?
Only two electrons.
How many electrons are in the outer valence shell of a plutonium atom?
Only two electrons in the seventh shell.
What is the maximum number of electron the n 2 electron shell can hold?
8
How many electrons are in the first shell of beryllium?
Beryllium like every other element excluding hydrogen has 2 electrons in its first shell.
How many electrons go in the first shell of oxygen?
In the first shell there are two electrons and in the second shell there are six electrons, but only the electrons in the second (outer) shell are valence electrons.
What is the valence of beryllium?
The beryllium atom has 4 electrons and the valence is 2.
What is the number of electrons that can occupy the first shell of an atom?
The first shell of an atom can hold a maximum of 2 electrons.
How many electrons are located in the first two shell?
the first shell of electrons has only 2 spaces in it before it is full whereas the 2nd shell has 8 electrons in it to be full.
How many electrons can the first shell hold?
The first electron shell, or energy level only holds 2 electrons. It is the smallest and closest energy level to the atom's nucleus. Hydrogen and helium are the only two elements to have electrons in just the first shell.
Why can't hydrogen have more than 2 electrons in its valence shell?
Hydrogen's valence shell can only accommodate a maximum of 2 electrons because it has only one electron orbital available (1s orbital). This means that it can bond with only one other atom to fill its valence shell and achieve stability through a full outer shell.
