An atom of an element contains 35 electrons and 45 neutrons. Deduce the number of protons the electronic configuration for the element All the four quantum numbers for the last electron - Chemistry

An atom of an element contains 35 electrons and 45 neutrons. Deduce

Answer in Brief

An element X contains 35 electrons, 45 neutrons

The number of protons must be equal to the number of electrons. So the number of protons = 35.
Number of electrons = 35. So the electronic configuration is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵.
The last electron i.e. 5^th electron in 4p orbital has the following quantum numbers. n = 4, l = 1, m = +1, s = `+1/2`

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Filling of Orbitals

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Chapter 2: Quantum Mechanical Model of Atom - Evaluation [Page 65]

Chapter 2 Quantum Mechanical Model of Atom
Evaluation | Q II. 16. | Page 65

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