@X@user.full_name@X@ @GMU: What is the de Broglie wavelength of a car with a mass of 900.3 kg traveling at a speed of 17.26 m/s?

@X@user.full_name@X@ @GMU: What is the de Broglie wavelength of a bumble bee with a mass of 1.667 g traveling at a speed of 1.917 m/s?

@X@user.full_name@X@ @GMU: Which is the correct electron configuration for B in its ground state?

@X@user.full_name@X@ @GMU: What is the wavelength of a line in the Balmer series of the hydrogen spectrum, if the transition occurs from ni = 3 to nf = 2? Remember the Rydberg constant is 1.097×10-2 nm-1

@X@user.full_name@X@ @GMU: Which of the answers below is isoelectronic with Cl

John Schreifels @GMU: How many sigma bonds (first) and how many pi bonds (second) are there in the compound drawn below? In this model there is a carbon where two lines intersect.

@X@user.full_name@X@ @GMU: Which is the correct electron configuration for Nb2- in its ground state?

John Schreifels @GMU: Which is the correct electron configuration for Ne in its ground state?

@X@user.full_name@X@ @GMU: What is the frequency of ultraviolet radiation if the wavelength is 33.09 nm? This length is about the size of an virus.

John Schreifels @GMU: Which element should have the lowest first ionization energy?