Please help! ASAP! Will give brainiest if correct

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Sound is a disturbance that travels through a medium as a

How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,ℓ=2n=4,ℓ=2 electronselectrons =6,ℓ=ℓ=−1n=6,ℓ=2,mℓ=−1