Question

Hello guys plz solve this problem......use pen and copy .18 no.plzzzzzz​

Answer 1

18. Sum is solved in the picture which I’ve sent .l hope it helps you

Answer 2

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