Question

question 3 of 22 consider the image of oxygen. how many electrons are in the first and second electron shells of oxygen, respectively? ○ 0, 8 ○ 6, 2 ○ 8 ○ 2, 6

Explanation:

Step1: Recall electron shell rules

The first electron shell (n=1) can hold a maximum of 2 electrons. The second electron shell (n=2) can hold up to 8 electrons, but for oxygen (atomic number 8, so 8 electrons total), after filling the first shell with 2, the remaining \( 8 - 2 = 6 \) go to the second shell.

Step2: Analyze the options

• Option "0, 8": Incorrect, first shell can't have 0 (oxygen has 8 electrons total, first shell must have 2 to start filling).
• Option "6, 2": Incorrect, order is first then second shell.
• Option "8": Incorrect, it's not specifying per shell.
• Option "2, 6": Matches the calculation (2 in first, 6 in second).

Answer:

2, 6 (the option with "2, 6")