Answer:
While the developed world benefits from the modern explosion of technology, countries like Ethiopia continue to rely on their forefathers' methods for important daily tasks such as farming, cooling, and providing clean water. These activities are often physically challenging, time and energy intensive, and are often carried out by female family members in many such societies. Furthermore, they can damage the local ecology and climate, such as deforestation and soil erosion caused by the use of trees for firewood. Western technologies are often too complicated, expensive, unacceptable, and difficult to maintain in developing societies, so they are of little or no use in these situations.
Answer:
-
= 1
= 1
Explanation:
Argon atom has atomic number 18. Then, it has 18 protons and 18 electrons.
To determine the quantum numbers you must do the electron configuration.
Aufbau's principle is a mnemonic rule to remember the rank of the orbitals in increasing order of energy.
The rank of energy is:
1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s < 5f < 6d < 7d
You must fill the orbitals in order until you have 18 electrons:
- 1s² 2s² 2p⁶ 3s² 3p⁶ : 2 + 2 + 6 + 2 + 6 = 18 electrons.
The last electron is in the 3p orbital.
The quantum numbers associated with the 3p orbitals are:
- = 1 (orbitals s correspond to = 0, orbitals p correspond to = 1, orbitals d, correspond to = 2 , and orbitals f correspond to = 3)
- can be -1, 0, or 1 (from - to + )
- the fourth quantum number, the spin can be +1/2 or -1/2
Thus, the six possibilities for the last six electrons are:
- (3, 1, -1 +1/2)
- (3, 1, -1, -1/2)
- (3, 1, 0, +1/2)
- (3, 1, 0, -1/2)
- (3, 1, 1, +1/2)
- (3, 1, 1, -1/2)
Hence, the correct choice is:
- = 1
- = 1
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Answer:
oysters
Explanation:
oysters form pearls inside their mouths, it's a very long process, and most oysters never finish or do them
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