Which of the following atoms contains the same number of neutrons as an atom of fluorine-19? (2 points) select one: a. neon-20 b. oxygen-19 c. sodium-22 d. nitrogen-16

1) Number of neutrons of Fluorine -19

The number 19 is the mass number of the atom.

The atomic number of fluorine is 9, which means it has 9 protons (which is constant for any atom of fluor

The number of protons is calculated as the mass number - atomic number = 19 - 9 = 10.

So, look for which of the other atoms have 10 neutrons

2)

element        mass number      atomic number     number of neutrons

Neon-20           20                        10                         20 - 10 = 10

Oxygen-19       19                         8                           19 - 8 = 11

Sodium-22        22                        11                          22 - 11 = 11

Nitrogen-16     16                           7                           16 - 7 = 9

So, the atom that has the same number of nuetrons as Fluorine-19 is Neon-20

Answer:

a. energy is absorbed in the reaction.

explanation:

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

They adding another layer their bahaviors.