Question

how to calculate the number of electrons in a compound
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Answer 1

Answer:

no of electrons = no of protons = atomic number of the elements. just add them then.

Explanation:

for eg. H2O, H=1 electron and O=8 electrons.

thus, no of electrons(H2O)= 2(1) + 8= 10.

Answer 2

Answer:

you have to learn math.

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Okay fine,Here's the Answer,You can Have the answer:-

chemical elements (see Resources) and find out the integer atomic number for each element identified in Step 1—the number that appears just above the chemical symbol for each element. In our example, the atomic numbers of the elements potassium (K), nitrogen (N), oxygen (O) and sulfur (S) are 19, 7, 8 and 16, respectively.

Subtract the charge value from the number of electrons obtained in Step 3 if the ion has a positive charge. Add the charge value to the number of electrons (Step 3) if the ion has a negative charge. Skip this step if the molecule has a neutral charge. In our examples, only SO42- is a charged ion; it has the negative charge 2. Add this value to the total from Step 3 to determine the total number of electrons in the molecule: 48 +2 = 50.

example:(19 x 1) + (7 x 1) + (8 x 3) = 50. In the second example, the number of electrons in SO42- equals (16 x 1) + (8 x 4) = 48.

Calculating numbers of subatomic particles

Calculating numbers of subatomic particles To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number. number of neutrons = mass number - atomic number.

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