0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What does the principal quantum number tell you?
The principal quantum number is the level of the most energetic electrons in an atom. It also corresponds to which period the element is in on the periodic table. For example, barium has a principal quantum number of 6 because its valence electrons are in level 6, and the element is in period 6.
What is the relationship between n and the total number of sublevels in a main energy level?
An electron in an atom is described by four quantum numbers:n, the principal quantum numberl, the azimuthal quantum numberml, the magnetic quantum numberms, the spin angular momentum quantum numberThe principal quantum number is a positive integer: 1, 2, 3, etc.The azimuthal quantum number is a non-zero integer: 0, 1, 2, 3, etc.The relationship between n and l is that l must always be strictly less than n. So, for n=1, the only permissible l value is 0. For n=2, l can be 0 or 1. So the number of types of orbitals per level is equal to n.The relationship between l and ml is that ml is an integer between -l and +l. There are 2l+1 values of ml for any given value of l.Since each n, l, ml triple specifies an orbital, if you work it out it turns out that there are n2 orbitals with a given principal quantum number n.Each orbital can have two electrons (ms = +1/2 or -1/2), so there are twice that number of electrons.
What is the quantum number for helium?
There are several different quantum numbers for a given atom (principle quantum number, the angular quantum number, the magnetic quantum number, the spin quantum number, etc) .I assume you are looking for the Principle Quantum number, n, which is equal to the row (period) in the period table in which the element is situated.For helium, the principle quantum number is 1.i.e. n = 1As another example; the principle quantum number for potassium (K), n = 4.
What is spin quantum number?
Good question! Experiments show that the electron "behaves" as if it is a spinning ball of charge. But be careful...the electron IS NOT a spinning ball of charge. Instead the concept is quantum mechanical and has no actual classical analogy. why we r taking the spin of the electorn is +1/2 or -1/2 is there any relation bet rotational symmetry
How many electrons have quantum numbers values n l m?
In theory, the number of electrons with each quantum number is not limited. However, for any given "main quantum number" (n), the number of electrons having the other quantum numbers is limited - but it depends on the value of "n". For more information, the Wikipedia article on "quantum number" seems to give a good overview.
All of the orbitals in a given electron shell have the same value of the?
Principal quantum number.
What does the principal quantum number tell you?
The principal quantum number is the level of the most energetic electrons in an atom. It also corresponds to which period the element is in on the periodic table. For example, barium has a principal quantum number of 6 because its valence electrons are in level 6, and the element is in period 6.
What is a characteristics of salt and other solutes?
The principal characteristic of a solute is the solubility in a solvent, at a given temperature.
What is the relationship between n and the total number of sublevels in a main energy level?
An electron in an atom is described by four quantum numbers:n, the principal quantum numberl, the azimuthal quantum numberml, the magnetic quantum numberms, the spin angular momentum quantum numberThe principal quantum number is a positive integer: 1, 2, 3, etc.The azimuthal quantum number is a non-zero integer: 0, 1, 2, 3, etc.The relationship between n and l is that l must always be strictly less than n. So, for n=1, the only permissible l value is 0. For n=2, l can be 0 or 1. So the number of types of orbitals per level is equal to n.The relationship between l and ml is that ml is an integer between -l and +l. There are 2l+1 values of ml for any given value of l.Since each n, l, ml triple specifies an orbital, if you work it out it turns out that there are n2 orbitals with a given principal quantum number n.Each orbital can have two electrons (ms = +1/2 or -1/2), so there are twice that number of electrons.
What is the quantum number for helium?
There are several different quantum numbers for a given atom (principle quantum number, the angular quantum number, the magnetic quantum number, the spin quantum number, etc) .I assume you are looking for the Principle Quantum number, n, which is equal to the row (period) in the period table in which the element is situated.For helium, the principle quantum number is 1.i.e. n = 1As another example; the principle quantum number for potassium (K), n = 4.
What is spin quantum number?
Good question! Experiments show that the electron "behaves" as if it is a spinning ball of charge. But be careful...the electron IS NOT a spinning ball of charge. Instead the concept is quantum mechanical and has no actual classical analogy. why we r taking the spin of the electorn is +1/2 or -1/2 is there any relation bet rotational symmetry
How many orbitals in the fourth energy level?
The atomic states with principal quantum number 4 can have orbital angular momentum quantum numbers from -4 to 4. Hence there are 9 possible values of the orbital angular momentum quantum number. Each electron can have spin +1/2 or -1/2, so each of the states specified by a given orbital angular momentum quantum number can have at most two electrons in the state without violating Pauli's exclusion principle. So, in sum, there are 18 possible states for an electron with principal quantum number 4.
What will be the value of magnetic quantum number if the value of azimuthal quantum number is given to you?
-l to l, so given l=2 (d orbital) the values for ml will be -2, -1, 0, +1, +2
How many electrons have quantum numbers values n l m?
In theory, the number of electrons with each quantum number is not limited. However, for any given "main quantum number" (n), the number of electrons having the other quantum numbers is limited - but it depends on the value of "n". For more information, the Wikipedia article on "quantum number" seems to give a good overview.
What is the maximum number of s orbitals p orbitals d orbitals and f orbitals in any single energy level in an atom?
For fun, let's give them numbers instead of letters, and call s "0", p "1", d "2", and f "3".Then the number of distinct orbitals for any given principal quantum number (which is a more precise way of the concept you meant when you said "energy level") is twice the number plus 1... though the principal quantum number must be higher than the numbers we just gave the orbitals in order for there to be any at all (there aren't any 1p orbitals, for example). For principal quantum number of at least four, there are 1 s orbital, 3 p orbitals, 5 d orbitals, and 7 f orbitals. If we call the four quantum numbers n, l, m, and s, where n is the principal quantum number, l is the azimuthal quantum number, m is the magnetic quantum number, and s is the spin quantum number, the permissible values are: n - any integer such that 0 < n ("shell") l - any integer such that 0 <= l < n (orbital "type" - s, p ,d ,f, g, h, i, etc.) m - any integer such that -l <= m <= l (individual orbitals of type l) s - -1/2 or +1/2 (electron "spin")
Why does the M shell in Bohr theory really contain 18 electrons while the N shell really contains 32 electrons?
The formula for getting the total number electrons occupying a shell is given by 2n2 For M shell the principal quantum number, that is, 'n' is 3. So 2 x 9 = 18 For N shell its quantum number is 4 and hence 32 electrons.
Is Magnetic quantum number ever larger than the principle quantum number?
No, for any given electron, the principle quantum number will be larger. For example, a second shell, p-subshell electron will have the quantum numbers {2, 1, ml, ms} where mlcan be -1, 0, or 1 and, as always, ms can be ½ or -½. The largest ml can be is +1, which is smaller than the principle quantum number, 2.
