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From were the formula 2n square to determine the number of electrons derived?
Wiki User
∙ 13y ago
Actually it is quite simple. If you are familier with the basics of the quantum theory you can see that the number of orbitals for any given principle quantum number is n^2. Since one orbital can carry a maximum of 2 electrons, the total number of electrons for a principle quantum number is 2 x n^2 = 2n^2
If you are unfamilier with quantum theory. It can be simplified like so - we know that electrons are present in three dimensional energy levels (orbitals). Each of these energy levels have may many sub orbitals. for example for the 1st energy level the number of sub orbitals is n^2 (n square) that is 1 x 1 = 1. then the total number of electrons for this energy level is 2n^2 = 2 x 1^2 = 2.
Wiki User
∙ 13y ago
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How do you determine if an atom is an ion?
By the number of electrons.
Can the mass number be used to determine the number of electrons in an atom?
The number of electrons is the same as the number of protons, which is the atomic number of the element.
What is the maximum number of electrons in the 2px orbital of an atom?
When n=2, you have an s orbital with 2 electrons, and you have 3 p orbitals each with 2 electrons (total of 6). So, total number of electrons for n=2 is 8 electrons.
How can you determine the number relate to the protons and electrons of an element?
Protons are positively charged, electrons are negatively charged. Each atom has the same number of electrons as protons.
What do these valence electrons do that make them are so important in chemistry?
the number of valence electrons determine the reactivity of the atoms
How can Lewis theory be used to determine the formula or ionic compounds?
"To use Lewis theory to determine the formula of an ionic compound, determine the number of valence electrons lost by the metal to form an octet, and the number of electrons gained by the nonmetal to form an octet." Refer the link below for further reading.
How many electrons on the fifth orbit?
The formula to determine the number of electrons in an energy level is 2n2, where n is the number of the energy level. For the fifth energy level, n=5. So the total number of electrons possible in the fifth energy level is 2(52) = 50.
How can you determine the number of electrons in a atom?
The atomic number
Why are the number of electrons in an atom important?
Electrons determine the chemical properties.
What parts of an atom determine its chemical properties?
Electrons determine the chemical properties of an atom.
Do electrons determine what kind of element an atom is?
The number of protons determine the element. It is equal to the atomic number. The number of electrons is equal to the number of protons only of the atom is neutral.
How do you determine if an atom is an ion?
By the number of electrons.
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of CO2?
4 bonding electrons, 16 nonbonding electrons
What does the number of electrons in an atom determine?
In a neutral atom the total number of electrons is equal to the number of protons and atomic number.
How do you determine the number of electrons inone atom of an element?
the number of electrons of an atom is the same as it's atomic number
Can the mass number of an element be used to determine the number of electrons in an atom?
No. The mass number can be used, however, to determine the number of neutrons. Electrons can only be determined by knowing the atom's charge.
Can the mass number be used to determine the number of electrons in an atom?
The number of electrons is the same as the number of protons, which is the atomic number of the element.
