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3 years ago

Which statment about an atom of flourine is correct

Chemistry

2 answers:

slamgirl [31]3 years ago

5 0

Answer:

10 neutrons

This isotope of fluorine has 9 protons, 9 electrons and 10 neutrons.

Explanation:

grandymaker [24]3 years ago

4 0

Answer:

10 neutrons

Explanation:

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Serhud [2]

1. Francium
2. Nitrogen
3.rubidium
4. Krypton

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3 years ago

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Answer:

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3 years ago

A sample of a compound of xenon and fluorine contains molecules of a single type; XeFn, where n is a whole number. If 5.0 x 1020

kicyunya [14]

Answer:

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by $N_0$ .

Also, it is the number of particles in exactly 12.000 g of isotope carbon 12.

Avogadro constant:-

$N_a=6.023\times 10^{23}$

Hence,

Mass of $XeF_n$ = 131.293+ n18.998 g

So,

$6.023\times 10^{23}$ molecules have a mass of 131.293+ n18.998 g

Also,

$1$ molecules have a mass of $\frac{(131.293+ n18.998)}{6.023\times 10^{23}}$ g

So,

$5.0\times 10^{20}$ molecules have a mass of $\frac{(131.293+ n18.998)}{6.023\times 10^{23}}\times 5.0\times 10^{20}$ g

Also, given mass = 0.172 g

Thus,

$\frac{(131.293+ n18.998)}{6.023\times 10^{23}}\times 5.0\times 10^{20}=0.172$

$\frac{18.998n+131.293}{1204.6}=0.172$

$18.998n+131.293=207.1912$

$n=\frac{75.8982}{18.998}=4$

<u>Thus, value of n is 4.</u>

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3 years ago

Brainliest to whoever gets it correct.

lakkis [162]

Answer:

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Explanation:

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3 years ago

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Which subatomic particles had negligible mass and travels around outside the nucleus? A protons B neutron C electron D orbital ?

kap26 [50]

C. Electron. It’s a negatively charged particle that orbits around the nucleus. Usually, there are multiple electrons going around the nucleus in different orbitals (the circle around the nucleus in which the electron travels). The mass is much smaller compared to that of a proton or neutron and can be ignored when calculating the mass of an atom.

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3 years ago