Proton number

Number of protons

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Proton number is the number of protons number The calculation and conversion method of proton number is: proton number= Nuclear charge number =Extranuclear Number of electrons = Atomic number ； Proton number+ Neutron number ≈ Relative atomic mass 。

Chinese name: Proton number
Account: Chemistry

Attribution: atom
Scope: atom

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one Proton equation
two Nuclear composition

Proton equation

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Three of atoms equation ： Nuclear charge number = proton Number=out of core Number of electrons = Atomic number

Proton number+ neutron Number ≈ Relative atomic mass

An atom consists of a nucleus and extranuclear electrons

Proton number (Z)= cation The number of extranuclear electrons of+the charge number of cations

Proton number (Z)= anion Number of extranuclear electrons of - number of anions

Mass number (A) =proton number (Z)+neutron number (N)

Nuclear composition

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Nucleus Again proton and neutron Composed (not in two layers), each proton has one unit positive charge ，

Take as many units as there are protons positive charge The number of positive charges carried by the proton is called Nuclear charge number ，

So the number of nuclear charges=the number of protons in the nucleus, we often say Oxygen atom The "nuclear charge number" of is 8, that is, the proton number of the oxygen atom is 8.

We can also Atomic number Determine the proton number of the element, such as oxygen element The atomic number of the oxygen atom is 8. The proton number of the oxygen atom is 8 Number of electrons It is 8.

This is because each electron carries one unit negative charge , and the whole atom It is non electric, that is Electroneutrality Therefore, the number of nuclear charges must be equal to the number of extranuclear electrons.

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