Hello guys plz solve this problem......use pen and copy .18 no.plzzzzzz
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18. Sum is solved in the picture which I’ve sent .l hope it helps you
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Step-by-step explanation:
Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model and matrix mechanics), part of quantum field theory, is a fundamental theory in physics. It describes physical properties of nature on an atomic
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