Answer:
The second model.
Explanation:
In a Bohr Model, you have your nucleus in the middle, in #1, it's the relatively large black circle, and in #2, it is the large grey dot with the number of protons & neutrons in the center. Now the first ring of a Bohr Model can hold a maximum of 2 electrons. The second ring of a Bohr Model can hold a maximum of 8 electrons. If the element has more than 10 electrons, there will be a third ring (as is shown on your worksheet), and the third ring can hold a whopping 18 electrons!
(Continued from my last answer)
In question #3, the first model follows the orbital rules, as we have 2 electrons on the first ring, 8 electrons on the second ring, and 6 electrons on the third ring. On the other hand, the second model does not follow the orbital rules, as we have 2 electrons on the first ring, only 4 electrons on the second ring, and 10 on the third ring. The mistake here is found on the second ring, as we must hold the max amount of electrons on a ring before moving to the next ring. If the second model were to be correct, it would be shown as 2 electrons on the first ring, 8 electrons on the second ring, and 6 electrons on the third ring.
Answer:
Empirical formulas show the simplest whole-number ratio of atoms in a compound, molecular formulas show the number of each type of atom in a molecule, and structural formulas show how the atoms in a molecule are bonded to each other.
Explanation:
this is the correct answer you want
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Desertification:Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.
Deforestation: the action of clearing a wide area of trees.
Climate change: Climate change describes a change in the average conditions — such as temperature and rainfall — in a region over a long period of time. NASA scientists have observed Earth's surface is warming, and many of the warmest years on record have happened in the past 20 years.
Extinction:
the state or process of being or becoming extinct.
a. displacement = 6 km
b. velocity = 4 km/h
<h3>Further explanation</h3>
Given
a morning paper route
Required
displacement
velocity
Solution
Displacement is a vector quantity that shows changes in the position of objects in a certain interval of time. Displacement has magnitude and direction
Can be simplified displacement = distanced traveled from starting point to ending point
a. Since we only consider the starting point and the end point, we just need to add up the distances to the north
3 km + 3 km = 6 km
b. Velocity = displacement changes with time
Answer:
Option D. ZnCl₂ and H₂
Explanation:
From the question given above, the following equation was obtained:
2HCl + Zn —> ZnCl₂ + H₂
Products =?
In a chemical equation, reactants are located on the left side while products are located on the right side i.e
Reactants —> Products
Now, considering the equation from the question i.e
2HCl + Zn —> ZnCl₂ + H₂
The products are ZnCl₂ and H₂ because from our discussion above, we said that products are only located on the right side of chemical equation.
Thus, option D gives the correct answer to the question.