Consider the hydrogen atom as a one dimensional box with a length of 106 pm. Calculate the wavelength of radiation emitted when its electron transitions from the ������=3 state to the ������=2 state.

Which element is the least metallic between cadmium, silver, zinc, or iron?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?