michaelchrislee michaelchrislee
  • 23-09-2019
  • Chemistry
contestada

In a chemical formula, the number of atoms for each element is usually indicated by a

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donotbeidle donotbeidle
  • 27-09-2019

Answer:

Subscript

Explanation:

For example [tex]Ca_1 Cl_2[/tex] shows 1 atom of Ca and 2 atoms of Cl

Another example

[tex]3Ca_3 (P_1 O_4 )_2[/tex]

we multiply

Coefficient × subscript × number outside the bracket.......... to find the number of atoms  

(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

So,

[tex]3 \times 3 = 9[/tex] , Ca atoms

[tex]3 \times 1 \times 2 = 6[/tex] , P atoms

[tex]3 \times 4 \times 2 =24[/tex], O atoms are present.

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