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Questions and Answers
How many electrons max can the 1st energy level hold?
How many electrons max can the 1st energy level hold?
2
How many electrons max can the 2nd energy level hold?
How many electrons max can the 2nd energy level hold?
8
How many electrons max can the 3rd energy level hold?
How many electrons max can the 3rd energy level hold?
8
What is the element name for an oxygen atom?
What is the element name for an oxygen atom?
What is the chemical symbol for oxygen?
What is the chemical symbol for oxygen?
What is the atomic mass of oxygen?
What is the atomic mass of oxygen?
How many protons and electrons does an oxygen atom have?
How many protons and electrons does an oxygen atom have?
How many neutrons are in an oxygen atom?
How many neutrons are in an oxygen atom?
Why is the number of neutrons in oxygen 8?
Why is the number of neutrons in oxygen 8?
How do you find the number of neutrons?
How do you find the number of neutrons?
Can you round the final answer when you calculate the number of neutrons?
Can you round the final answer when you calculate the number of neutrons?
How many electrons are on the first ring of the oxygen Bohr model?
How many electrons are on the first ring of the oxygen Bohr model?
How many electrons are on the second ring of the oxygen Bohr model?
How many electrons are on the second ring of the oxygen Bohr model?
What is the element name for a sodium atom?
What is the element name for a sodium atom?
What is the chemical symbol for sodium?
What is the chemical symbol for sodium?
What is the atomic mass of sodium?
What is the atomic mass of sodium?
How many protons and electrons does a sodium atom have?
How many protons and electrons does a sodium atom have?
How many neutrons are in a sodium atom?
How many neutrons are in a sodium atom?
Why are there 12 neutrons in sodium?
Why are there 12 neutrons in sodium?
How many electrons are on the first ring of the sodium Bohr model?
How many electrons are on the first ring of the sodium Bohr model?
How many electrons are on the second ring of the sodium Bohr model?
How many electrons are on the second ring of the sodium Bohr model?
How many electrons are on the third ring of the sodium Bohr model?
How many electrons are on the third ring of the sodium Bohr model?
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Study Notes
Electron Configuration in Energy Levels
- The 1st energy level can hold a maximum of 2 electrons.
- The 2nd energy level can accommodate up to 8 electrons.
- The 3rd energy level also has a maximum capacity of 8 electrons.
Oxygen Atom Characteristics
- Element name is Oxygen with atomic number 8.
- Chemical symbol for Oxygen is O.
- Atomic mass of Oxygen is 15.999.
- Contains 8 protons and 8 electrons, indicating it is electrically neutral.
- The number of neutrons in Oxygen is 8, calculated as 15.999 (mass number) - 8 (atomic number), rounded to 8.
Determining Neutron Count
- Neutron count can be found using the formula: mass number - atomic number.
- Rounding the answer when calculating neutrons is permissible.
Oxygen Bohr Model
- The Bohr model for Oxygen shows 2 electrons in the first ring and 6 electrons in the second ring, with no third ring required.
Sodium Atom Characteristics
- Element name is Sodium with atomic number 11.
- Chemical symbol for Sodium is Na.
- Atomic mass of Sodium is 22.990.
- Contains 11 protons and 11 electrons, reflecting electrical neutrality.
- Number of neutrons in Sodium is 12, computed as 22.990 (mass number) - 11 (atomic number), rounded to 12.
Sodium Bohr Model
- The Bohr model for Sodium includes three rings: 2 electrons in the 1st ring, 8 in the 2nd, and 1 in the 3rd, totaling 11 electrons.
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