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The centre of an atom is the nucleus (made up of the protons and the neutrons). The nucleus is very small. It occupies only a tiny fraction of the atom volume. It has A positive charges, where A is the atomic number.
The electrons make up the rest of the volume of the atom. They are arranged in shells, like an onion, according to the principle quantum number and its sub-numbers. There will be A negative electrons in a neutral atom where A is the atomic number.
The innermost shell (lowest principle quantum number) is called 1 in modern practice, K from earlier practice. Both the 1,2,3,4,5,6,7... numbering and K,L,M,N,O,P,Q,... are in current use.
The innermost shell, K or 1, holds only 2 electrons maximum. The second shell is referred to as L or 2 and it holds 8 electrons maximum. The third shell labelled M or 3, holds 18 electrons maximum, but here we run into a problem. Because of energy consideration, there will be no more than 8 electrons in 3 or in any other outer (valence) shell. Once the third shell has hit 8 electrons, the next electrons must go into shell 4. Then, since 4 is now the outer shell, more electrons can be placed into shell 3 taking it to 18.
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At the center of every atoms is a mass-filled region called the?
centeral part of an atom consists of protons and neutrons I believe it is called the nucleus
What is another name for the Energy levels in atoms?
The region where electrons most likely lie are called energy levels, or shells.
How many chloride atoms would be in a compoud in the name a.dichloride b.tetrachloiride c.dechloride'?
how many chloride atoms would be in a compound in the name : dichloride tetachloride decachloride
How are the inner shell electrons represent in a Lewis structure?
In a Lewis dot structure (also called an electron dot structure) there are no inner electrons and shells shown because Lewis dot structures are usually used to show bonds between elements, and the inner electrons are never usually involved with the bonding of atoms.
What is the very small dense region of an atom?
NUCLEOLUS- small dense region where the assembly of ribosomes beginschromatinnucleolus
What is the name of inner region of the adrenal glands?
Inner Medulla
What is the name of the inner region of a lymph node?
The Medulla is the inner region of a lymph node. It contains B cells, plasma cells, and macrophages.
What is the name of an atoms outer region?
electron cloud
What is the liquid region above Earth's inner core?
The liquid region above the Earth's inner core is the outer core.
What is the unpopulated inner region of Australia?
Outback
What is the innermost region of the earth?
Inner core
What is the inner region of the adrenal gland?
Adrenal Medulla
The inner region of bone is called?
medullary cavity
What is the proper name for the inner ear?
Inner ear is a proper name.
What are the difference layers of the kidneys?
The renal cortex is the outer region of the kidney. The medulla is the inner region of the kidney.
What are the two layers of the kidney?
The renal cortex is the outer region of the kidney. The medulla is the inner region of the kidney.
Is a molecule found in the inner orbit?
No. Molecules are not in the orbitals of atoms. They are composed of multiple atoms. The electrons that dictate how they form are in the outer orbitals.
