The letter associated with each subshell tells us what, specifically? choose the one best answer.

a. the principal quantum number of the orbital.
b. the principal shell of the orbital.
c. the maximum number of electrons.
d. the three dimensional shape of the orbital.
e. none of the above

Explanation:

Principle quantum number

In electronic configuration of an atom the Orbits or Shells are denoted using n.

K=1, L=2, M=3, N=4 ................ and so on. This number n is of significance which denotes the energy level where the electrons are found.

Orbital Angular Momentum Quantum Number (l)

The orbital angular momentum no. denotes the subshell of the electron. It tells the shape of the subshells as well.

s subshell corresponds to l=0, p subshell corresponds to l=1, d subshell corresponds to l=2, f subshell corresponds to l=3, and so on.

Magnetic Quantum Number (m)

Magnetic quantum no. denotes the no. of orbitals present in the subshell.

Each orbital can hold a maximum of 2 electrons both having opposite spin.

The no. of orbitals is taken from the angular momentum quantum number having given as

Now the magnetic quantum no. ranges from which includes zero in the middle.

There are n² number of orbitals found in an energy level.

Spin Magnetic Quantum Number (S)

Spin quantum no. can have values either

orbitals cannot contain two electrons of the same spin.

Electron with positive sign is known as alpha electron and the negative one is called beta electron.

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TOPIC: electronic configuration

d.

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c is the answer : )               your welcome