Table of Contents
- 1 How many electrons are needed to stabilize the 3rd shell of an atom?
- 2 Why is 8 electrons the most stable?
- 3 What can hold up 18 electrons?
- 4 How do you calculate electrons per shell?
- 5 What is the stable number of electrons in the outer shell?
- 6 How many electrons can the third shell of a covalent compound hold?
How many electrons are needed to stabilize the 3rd shell of an atom?
Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule. Some atoms can be stable with an octet even though their valence shell is the 3n shell, which can hold up to 18 electrons.
Why is 8 electrons the most stable?
Atoms with 8 electrons in their valence shell have completely filled last orbitals and are therefore the most stable, as their electronic configuration is similar to that of the closest noble gas.
Can the third electron shell hold 18 electrons?
Each shell can contain only a fixed 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.
What can hold up 18 electrons?
Number of electrons in each shell Each d subshell holds at most 10 electrons. Each f subshell holds at most 14 electrons. Each g subshell holds at most 18 electrons.
How do you calculate electrons per shell?
Rule 1: The maximum number of electrons present in a particular shell is calculated by the formula 2n2, where “n” represents the shell number. For instance, K shell is the first shell and it can hold up to 2(1)2 = 2 electrons. Similarly, L shell is the second shell and it can hold up to 2(2)2 = 8 electrons.
How many electrons are there in the 3rd shell?
There is a much better solution that can end up saving you money. According to the 2-8-8 rule, the 3rd orbital has only 8 electrons in its valence orbital, but from the formula 2n^2, the 3rd shell would have 18 electrons in its valence orbital. Why aren’t they having the same number of electrons in the same shell?
What is the stable number of electrons in the outer shell?
You dismissed this ad. The feedback you provide will help us show you more relevant content in the future. As with all shells from 2 on up, it’s stable at 8 electrons if it is the outer (valence) shell, or if the shell above it has 2 or fewer electrons.
How many electrons can the third shell of a covalent compound hold?
Explanation: In this sense the third shell can hold 8 electrons. In this sense the third shell can hold a total of 18 electrons. So the third shell can be considered to hold 8 or 18 electrons but in total the third shell can hold 18 electrons.
What is the next shell to fill after 8 electrons?
So after filling the 3s and 3p subshell with 8 electrons, the next shell to fill is the 4s one. Only when that is full, the remaining 10 electron positions in the 3d subshell will get filled. it has the capacity of 18 electrons but it does not necessarily indicates that there has to be 18 electrons.