Stratosphere is between which two layers/spheres of atmosphere?
i. Exosphere & Troposphere
lonosphere & Mesosphere
Troposphere & Mesosphere
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Explanation:
Moving from left to right across a period, electrons are added one at a time to the outer energy shell. Electrons within a shell cannot shield each other from the attraction to protons, while moving down a group in the periodic table, the number of electrons and filled electron shells increases.
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