Answer: 6 electrons
Explanation: Oxygen atom has atomic no of 8 which means it has got 8 electrons. n=2 depicts that the electrons have principle quantum no = 2. According to Afbau's rule the electrons are arranged in shells of increasing energy as follows:
Thus there are 2 electrons in 2s and 4 electrons in 2p which makes a total of 6 electrons.
The best and most correct answer among the choices provided by your question is the first choice or letter A.
When a plant ran out of CO2, t<span>he light-independent reactions of photosynthesis would most likely be affected first.</span>
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<em>An area where the largest coral reefs flourish would be;</em>
B.) Indian Ocean
<u>Only the Indian Ocean lies within the required latitudes. Coral reefs form in latitudes within 30 deg of equator.</u>
