Protons, Neutrons, and Electrons Practice Worksheet
Calculating the number of each particle in autor
Proton Atomic Number
Electrons Protons
Neutrons Atomic Mass - Atomic Number OR Big Small
0
Oxygen
15.000
Use the periodic table to find the numbers of protons, neurons, and electrons for some of the following
, ,
elements
Name of Element
Element
Symbol
Артіс
Numb
Proton
Neutron
electrons
Electrons
Number
B
11
5
5
6
5
Boron
Sadiun
24
11
Y
20
Copper
29
35
TC
43
PE
207
Thallium
204
81
Н.
0
Carbon
12
N
2
56
Calcium
SI
14
Argon
10
MO
12

Answer:

Sorry I am not good at chemistry

Explanation:

The characteristics of the atoms and the periodic table allow to find the result for the number of protons, neutrons and electrons, the results in the table

The periodic table is a graphic representation where the chemical elements are placed by their atomic number, this table is organized in row and columns, where the elements of the same column have similar properties.

The period table indicates the atomic number, which is the number of protons, and the atomic mass, which is the sum of the protons plus the neutrons.

The atoms are neutral entities therefore the number of electrons must be equal to the number of protons.

It is asked to calculate the number of electrons, protons and neutrons of various chemical elements

Element Sodium,   symbol  Na

Atomic number (Z) 11

Atomic weights (M) 24

The number of protons is equal to the atomic number

      protons 11 protons

The number of neutrons is

      # neutrons = M - Z

      # neutrons = 24 -11

      # neutrons = 13 neutrons

The number of electrons is equal to the atomic number

      # electrons = 11

Element Yttrium,  symbol Y

Atomic Number 39

Atomic mass 89

Protons 39

Neutrons = 89-39 = 50

Electrons 39

Element Copper,  Symbol  Cu  

Atomic number 29

Atomic mass 64

protons 29

Neutrons = 64-29 = 35

Electrons 29

Element Technesium,  Symbol  Tc  

Atomic number 43

Atomic mass 98

protons 43

neutrons = 98 -43 = 55

electrons 43

Element Lead, Symbol  Pb  

Atomic Number 82

atomic mass 207

protons 82

neutrons = 207 -82 = 125

electrons 82

Element Thalium, Symbol  Ta  

Atomic Number 81

atomic mass 204

protons 81

neutrons = 204 -81 = 123

electrons 81

Element Hydrogen, Symbol  H  

Atomic number 1

Atomic mass 1

protons 1

neutrons 0

electrons 1

Element Carbon, Symbol C  

Atomic number 6

Atomic mass 12

Protons 6

neutrons = 12-6 = 6

electrons 6

Element Nitrogen, Symbol  N  

Atomic number 7

Atomic mass 14

protons 7

neutrons = 14-7 = 7

electrons 7

Element  Barium, Symbol  Ba  

atomic number 56

atomic mass 137

protons 56

neutrons = 137-56 = 81

electrons 56

with these results we complete the following table

Element   Symbol   Protons   Neutrons  Electrons

Sodium      Na              11              13                11

Yttrium          Y              39            50              39

Copper       Cu              29            35              29

Tecnetium  Te              43             55             43

Lead            Pb             82            125             82

Thallium      Ta             81              123             81

Hydrogen    H                1                0                 1

Carbon        C                6                6                6

Nitrogen      N                7                7                7

Barium       Ba             56               81              56

In conclusion using the characteristics of the atoms and the periodic table we can find the result for the number of protons, neutrons and electrons, the results in the table

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