Structure of At...

If the principal quantum number of a shell is 2, what types of orbitals will be present?

Statement I : $$\displaystyle ^{ 12 }{ C }\ $$ is an isotope of  $$\displaystyle ^{ 14 }{ C }\ $$.
Statement II: The nuclei of both atoms have the same number of neutrons.

The predominant yellow line in the spectrum of a sodium vapour lamp has a wavelength of $$590 nm$$. What minimum accelerated potential is needed to excite this line in an electron tube having sodium vapours?

In ground state of chromium atom $$(Z=24)$$ the total number of orbitals populated by one or more electrons is?

The mass of photon having wavelength $$1 nm$$ is:

Two trials of a reaction were run in a lab where absorbance data was collected over time.
In trial $$2$$, the absorbance values for the reaction for each unit of time were higher than they were for trial $$1$$.
Also, the rate of trial $$2$$ was higher than that of trial $$1$$.
Which of the following is most likely the case?

Gas A is a colorless gas and Gas B is orange in color. Consider the absorbance data for gases A and B when they were analyzed through spectroscopy.
Which of the following statements best explains the data?

Beer's Law states that $$A = abc$$, where A is absorbance, a is the molar absorptivity constant, b is the path length, and c is the molar concentration.
Which of the following would be an incorrect application of Beer's Law?

The wave number of a particular spectral line in the atomic spectrum of a hydrogen like species increases $${9}/{4}$$ times when deuterium nucleus is introduced into its nucleus, then which of the following will be the initial hydrogen like species?

A man writes his biodata with carbon pencil on the plane paper having mass 150 mg. After writing his biodata, he weighs the written paper and find its mass 152 mg. What is the number of carbon atoms present in the paper?