Which element has 3 electrons shells?
Table of Contents
Which element has 3 electrons shells?
Lithium (Li)
Lithium (At. No. = 3) has three electrons, two in the K shell and one located farther from the nucleus in the L shell….Electrons.
| Atomic Number | 3 |
|---|---|
| Element | Lithium (Li) |
| Energy Levels or “shells” | 2 |
| 1 |
Why does the 3rd electron shell 8 or 18?
Each shell can contain only a fixed number of electrons, up to two electrons can hold the first shell, up to eight (2 + 6) electrons can hold the second shell, up to 18 (2 + 6 + 10) can hold the third shell and so on.
Which period has 3 electron shells?
A period 3 element is an element found on the third period (row) of the periodic table. The row has eight elements sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. Period 3 elements have electrons in the first three electron shells.
What is the 3rd electron shell called?
The third electron shell, 3n, also contains an s orbital and three p orbitals, and the third-row elements of the periodic table place their electrons in these orbitals, much as second-row elements do for the 2n shell.
How many electrons can 3rd shell hold?
18 electrons
The third shell holds 18 electrons; 2 in a 3s orbital; 6 in three 3p orbitals; and 10 in five 3d orbitals. The fourth shell holds 32 electrons; 2 in a 4s orbital; 6 in three 4p orbitals; 10 in five 4d orbitals; and 14 in seven 4f orbitals.
Does the 3rd shell hold 8 or 18 electrons?
1 Answer. 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.
Why are there 18 electrons in the third shell?
The shells of an atom cannot accommodate more than 8 electrons, even if it has a capacity to accommodate more electrons. This is a very important rule called the Octet rule. According to this rule, atoms gain, loose or share electrons to achieve the stable configuration similar to the nearest noble gas.
How are electron shells numbered?
Electrons are arranged in different shells around the nucleus . Each successive shell can only hold a certain number of electrons. The innermost shell is filled first. This shell can contain a maximum of two electrons….Electron shells.
| Energy shell | Maximum number of electrons |
|---|---|
| First | 2 |
| Second | 8 |
| Third | 8 |
Does the third shell hold 10 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.
How many atoms can the third shell hold?
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 is the 288 rule?
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. They, like all atoms, want to be happy.
Can the third shell hold 8 or 18 electrons?
What is the 2 8 8 electron rule?
Niels Bohr suggested that electrons will Fill up the shells according to the principal quantum number. For K shell, the principal quantum number(n) is 1. So, maximum electrons which can fill the cells are 2n2 = 2(1)2 = 2. The 2–8–8 rule is the electron filling rule in the shells of an atom.
Can the third shell hold 18 electrons?
What are the maximum number of electrons in each shell?
Electrons are arranged in different shells around the nucleus. Each successive shell can only hold a certain number of electrons. The innermost shell is filled first. This shell can contain a maximum of two electrons. The second shell can hold a maximum of eight electrons.
What is the Order of filling electrons in shells?
The closest shell to the nucleus is the first shell” (also known as the “K shell”) and has principal quantum number n = 1,
How many electrons does an electron shell have?
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.
How many electron shells does each element have?
How many electron shells does an atom have? 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. The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
