Which of the following numerical expressions gives the number of particles in 2.0 g of Ne?
1 answer:
Answer:
Explanation:
- 1 mole of any substance contains Avogadro number of particles i.e, 6.022 × 10^23 particles.
- number of of particles in n moles of a substance = n*Avogadro number
- number of moles of Ne in 2.0 g of Ne= 2/20=0.1
[number of moles=given weight/ gram molecular weight]
- so, number of particles in 2.0 g of Ne = number of particles in 0.1 moles of Ne= 0.1(6.022 × 10^23)
=
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Answer:
Protons: 2.
Electrons: 2.
Neutrons: 2.
Explanation:
Hello,
In this case, since an atom's atomic number is equal to the number of electrons, considering the electron configurations, taking into account that helium-4 is neither positively nor negatively charged, we can infer that the number of electrons equal the number of protons, which in this case are 2, due to the fact that is atomic number is 2.
Moreover, as helium-4's atomic number is 4 as a whole number, we compute the number of neutrons by using the shown below equation:
Regards.