How many electrons can occupy a 3rd energy level?

How many electrons can occupy a 3rd energy level?

Note: The third energy level can actually hold up to 18 electrons, so it is not really filled when it has 8 electrons in it.

Why is 3rd shell 8 or 18?

second and third periods can accommodate 8 and 18 electrons respectively. Since their outermost shells can contain only 8 electrons, there are only 8 elements in boththe periods.

How many electrons can the 1st 2nd and 3rd energy level hold?

The first shell (closest to the nucleus) can hold two electrons. The second shell can hold 8 electrons. The third shell can hold 32 electrons. Within the shells, electrons are further grouped into subshells of four different types, identified as s, p, d, and f in order of increasing energy.

Why does the 3rd energy level hold 18 electrons?

In this sense the third shell can hold 8 electrons. 4s2 not the third shell, but the next 10 electrons go into the 3d orbitals that are part of the third shell but shown on the fourth shell level. In this sense the third shell can hold a total of 18 electrons۔

What is the 2 8 8 rule in chemistry?

We should start with the atoms that have atomic numbers between 1 and 18. There is a 2-8-8 rule for these elements. The first shell is filled with 2 electrons, the second is filled with 8 electrons, and the third is filled with 8. You can see that sodium (Na) and magnesium (Mg) have a couple of extra electrons.

Is there a 5th Shell?

The 5th shell has 5s, 5p, 5d, 5f, and 5g orbitals. An s orbital can hold 2, p holds 6, d holds 10, f holds 14, and g holds 18 (which you are not expected to know for this class). If you add them up, you get 50 electrons that the 5th shell can hold. This also follows the 2n^2 rule.

How many electrons can fill the 4th Shell?

Answer and Explanation: The fourth shell of an atom can hold a maximum of 32 electrons, depending on the element. There are four subshells – 4s, 4p, 4d, and 4f – that can hold a maximum of 2, 6, 10, and 14 electrons, respectively, for a total of 32.

How many does the 2nd 3rd and 4th shell of electrons hold?

The first shell only has the s subshell ⟹ 2 electrons. The second shell has the s and p subshells ⟹ 2 + 6 = 8 electrons. The third shell has the s, p, and d subshells ⟹ 2 + 6 + 10 = 18 electrons. The fourth shell has the s, p, d, and f subshells ⟹ 2 + 6 + 10 + 14 = 32 electrons.

What is a 3rd energy level?

So, the third principal energy level can hold maximum 18 electrons and contain one s-orbital, three p-orbital and five d-orbital. Therefore, the third main energy level contains one s-orbital, three p-orbital and five d-orbital so the total orbitals will be 9.

How much can the 2nd energy level hold?

The second energy level has a total of 22 = 4 orbitals ,so it can hold up to 8 electrons. Each energy level is given a number called the principal quantum number, n. The closest shell has a value of n=1.

Is the third energy level full with 7 electrons?

Two is the maximum number of electrons for the level so the other electrons will have to go in higher energy levels. The n=2 level can hold up to eight electrons so the next 8 electrons will go in the n=2 level. The remaining 7 electrons can go in the n=3 level since it holds a maximum of 8 electrons.

What can hold up to 18 electrons?

The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen.

Can the fourth Shell hold 18 electrons?

Although the third electron shell can hold 18 electrons, the fourth electron shell can hold 32 electrons, the fifth electron shell can hold 50 electrons, and the sixth electron shell can hold 72 electrons, once each of those electron shells gets filled with 8 electrons, the next two electrons will go into the next …

What is the 3rd energy level?

The third principal energy level will have one s sublevel orbital, three p sublevel orbitals, and five d sublevel orbitals. Each orbital can contain a maximum of two electrons. This means the s sublevel can only have two electrons while the p sublevel can have six electrons and the d sublevel can have 10 electrons.

Is the third energy level full with 7 electrons?

Two is the maximum number of electrons for the level so the other electrons will have to go in higher energy levels. The n=2 level can hold up to eight electrons so the next 8 electrons will go in the n=2 level. The remaining 7 electrons can go in the n=3 level since it holds a maximum of 8 electrons.