Each shell can only hold a set number of electrons: the first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can, in principle, hold up to 2(n2) electrons.

You also need to know how many electrons each orbital can hold ?

two electrons

Additionally, why does the third shell have 8 electrons?

The third shell in its lowest state has room for 8 electrons, but including the higher energy 3d electrons it has a capacity of 18 electrons.

Considering that, how many electrons can the 4th orbital hold?

The fourth energy level has 18 electrons. The fourth energy level of the periodic table includes the 4s, 3d, and 4p orbitals. The 4p orbital contains 6 electrons.

What is the maximum number of electrons that can occupy the 3s orbital?

As it follows: 1 atomic orbital in 3s subplane x 2 Electrons/ orbital = 2 electrons can reside in the 3s subplane. 3 atomic orbitals in the 3p subplane x 2 electrons/orbital = 6 electrons can reside in the 3p subplane.

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seven

6 electrons

## Why can there only be 8 valence electrons?

This is due to the quantum nature of the Atoms where electrons are organized into shells: the first (called the K shell) has 2 electrons, the second (L shell) has 8, the third (M shell) has 18. Atoms combine into molecules by being in in most cases try to have valence electrons that completely fill one shell.

## How many electrons can 2s hold?

The second shell has two subshells, s and p, which are in fill with electrons in this order. The 2s subshell contains a maximum of 2 electrons and the 2p subshell contains a maximum of 6 electrons.

## Why are there only 8 electrons in the outer shell?

The octet rule is a chemical rule of thumb, which reflects the observation that elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas. All four of these electrons are counted in both the carbon octet and the oxygen octet.

## What is a subshell?

A subshell is a subdivision of electron shells separated by electron orbitals. Subshells are denoted s, p, d, and f in an electron configuration.

## Why are there 8 electrons in the outer shell?

The eight-electron stability of an atom is constrained by the stability of the noble gases or the older name inert gases, which have long been known to be inert or noble. However, this rule is justified for elements in the second row of the periodic table, whose outermost shell capacity is 8 electrons.

## What does an orbital diagram look like?

Orbital diagrams are pictorial descriptions of the electrons in an atom. Three rules are useful in forming orbital diagrams. According to the Auf-Bau principle, each electron occupies the orbital with the lowest energy. They jump up in energy a bit and we get the 2s orbital making it the 2p subplane.

## How is valence calculated?

The valence of an atom is equal to the Number of electrons in the outer shell when that number is four or less. Otherwise, the valence is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valence.

three subshells

## How many electrons can 5f hold?

Each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.

## How many subshells are in the N 5 shell?

For n = 5, the possible values of l = 0,1,2,3,4. These numbers correspond to s, p, d, f, and g orbitals. Now s has 1 subshell, p has 3, d has 5, f has 7 and g has 9. So the total number of subshells = 25.

He noticed that atoms seemed to emit two types of X-rays. As it turns out, K-type X-rays are the highest-energy X-rays that an atom can emit. It is formed when an electron in the innermost shell is released and then recaptured. This innermost shell is now called the K shell, after the notation used for the X-ray image.

nine orbitals

## Why is the 3rd shell 8 or 18?

Each shell can only hold a fixed number of electrons: the first shell can hold up to two electrons, the second shell can hold up to eight (2nd + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n 2 ) electrons.

## Why are there only 2 electrons in the first shell?

This first shell has only one subshell (marked 1s) and can hold a maximum of 2 electrons. That is why there are two elements in the first row of the periodic table (H & He). Since the first shell can only hold a maximum of 2 electrons, the third electron has to go into the second shell.