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nevsk [136]
2 years ago
11

How many protons, electrons, and neutrons does 18F- contain?

Chemistry
2 answers:
Rom4ik [11]2 years ago
7 0
<h3>Answer:</h3>

             Number of Protons  =  9

             Number of Neutrons  =  9

             Number of Electrons  =  10

<h3>Explanation:</h3>

Number of Protons:

                               The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Fluorine is 9 therefore, it contains 9 protons.

Number Neutrons:

                             The number of neutrons present in atom are calculated as,

                                # of Neutrons  =  Atomic Mass - # of protons

As given,

                                Atomic Mass  =  18

                                # of Protons  =  9

So,

                                # of Neutrons  =  18 - 9

                                # of Neutrons  =  9

Number of Electrons:

                                   As we know for a neutral atom the number of electrons are exactly equal to the number of protons present in its nucleus. So, for 9 protons in neutral Fluorine atom there must be 9 electrons. But, we are given with Fluoride Ion (i.e. F⁻) so it contains one extra electron hence, it contains the total of 10 electrons respectively.

yaroslaw [1]2 years ago
6 0

Answer:

Number of Protons  =  9

            Number of Neutrons  =  9

            Number of Electrons  =  10

Explanation:

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Explanation :  Given,

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Formula used :  

\Delta T_f=i\times K_f\times m\\\\T^o-T_s=i\times K_f\times\frac{\text{Mass of urea}\times 1000}{\text{Molar mass of urea}\times \text{Mass of X liquid}}

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Now put all the given values in this formula, we get

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  • Thanks
  • Hope it helps.
3 0
2 years ago
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