Answer: 5
Explanation: add up all the electrons and it will amount to 23. Arranging by the old model for electronic configuration, we have : 2, 8, 8, 5
The last number being 5 represent its valence electron
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Answer:
Humidity is the measure of how much water vapor is in the air.
Mangenese is the element which have 25 protons
Answer:
Oxygen.
Explanation:
They take in oxygen from the air. This is the process of respiration.
