he atomic number of fluorine is 9. How many electrons does an ion of fluorine have if it is represented by the symbol shown belo
2 answers:
The atomic number of fluorine is 9.
Atomic number is the number of protons present in the element. The number of electrons and protons is same in a neutral element.
The given ion of fluorine is . It represents a uninegative anion with a mass number of 19.
It is an anion with a charge of -1, this means that there is an additional electron in the ion. The number of electrons in this ion are 9 + 1 = 10 electrons
The correct answer will be C. 10 electrons
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This problem is providing the mass-volume percent of a formic acid solution so its molarity is required and found to be 0.313 M after the following calculations.
<h3>Molarity</h3>In chemistry, units of concentration provide a measurable understanding of the relationship between the relative amounts of both solute and solvent. In the case of molarity, one must relate moles of solute and liters of solution as follows:
In such a way, when given this mass-volume percent of 1.44% for the formic acid in the solution, one can assume there is 100 mL of solution and 1.44 g of solute (formic acid), which means one must convert the volume to liters and the mass to moles with:
Finally, we plug in these numbers in the equation for the calculation of molarity:
Learn more about molarity: brainly.com/question/10053901