Energy gains and losses are balanced not only on the Earth's surface, but also in the Earth's atmosphere. The incoming solar radiation is absorbed by the Earth's surface (51 units) and by the atmosphere and clouds (19 units). This is balanced by the infrared radiation emitted from the Earth's surface (6 units) and from the atmosphere (64 units) that are both lost to space."
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Explanation:
no of neutrons = 12. Now for an atom to be electrically neutral the no of electrons will be equal to the no of protons. Therefore it's valence = 1.7
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