How many energy levels are there?

Answer 1

It depends on what element the atom is. For example if it is Hydrogen it has one ring or energy level. The higher the element's atomic number is on the Periodic Table the more energy levels it will have.


Actually, every atom has an infinite number of energy levels. Yes, hydrogen has as many as plutonium or gold. The difference is how many of these levels are filled with electrons. When asking about how many filled electron levels an atom has, it increases with atomic number.

Answer 2

The maximum number is given by 2n^2 (2 times n squared) where n is the energy level. So:

1st energy level - 2 electrons

2nd energy level - 8 electrons

3rd energy level - 18 electrons

4th energy level - 32 electrons

5th energy level - 50 electrons

6th energy level - 72 electrons

However, not all elements fill every shell before moving on to the next one, so for any particular element you have to find out what its 'electron configuration' is to know how many there are in each energy level.

Answer 3

The number of electrons in each energy level (principal quantum number) is given by the formula 2n2

There are 2 in the first, 8 in the second, 18 in the third, 32 in the fourth etc.

The electronic configuration of elements is given by the aufbau principle. The order of the energy levels (in increasing energy) of the sub levels of the principal quantum number, the s, p d orbitals) in the elements does not simply follow the principal quantum number. See Aufbau principle in wikipedia.

Answer 4

Technically, atoms have an "infinite" number of energy levels, but after the 7th level, the electrons are considered to belong to another atom. If you're looking for which shell is considered an atom's outermost level (or valence level), you can easily find it by looking at the horizontal row that the element is in on the periodic table. The first row is row one and the bottom is row seven. For example, Hydrogen and Helium are in row 1, so their first energy level is also their outermost. Rubidium is in row 5, so its outermost shell is shell #5. Actinium is in the bottom row, row 7, so its outermost shell is shell #7....etc etc etc!

Hope this helps!

Answer 5

Energy levels are eigenvalues of the quantum mechanical equations that describe an electron's energy in a bound state.

While accurate, that may not be particularly helpful.

They are, essentially, the allowed energy levels an electron in an atom can have (unbound electrons are allowed to have effectively any energy; quantization happens as a result of them being bound to a nucleus). Each energy level can hold a certain number of electrons... the number is determined by the quantum numbers describing that particular energy level. No two electrons in an atom are allowed to have the same set of four quantum numbers (the Fermi Exclusion Principle), so once all the sets for a given energy level are filled, additional electrons have to go into a higher energy level.

Answer 6

There are seven energy levels in all, though depending on the element and how many electrons there are, it may not use them all. How many levels the atom in particular uses is essentially the same as which row the element is in on the periodic table. Hydrogen, being in the first row, only uses the very first level, whereas uranium, with nearly 100 electrons, down in the seventh row, ends up using all seven.

Answer 7

energy levels change. so there can be 1 to +. they always are changing

Answer 8

There are 4 energy levels they are

n=1

n=2

n=3

n=4

Answer 9

electrons arranged in a electron cloud of an atom.

Answer 10

2n2 so

n=1 then 2

n = 2 then 8

n = 3 then 18

n =4 then 32