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Consider your observations for Li and Na, the first two alkali metals: each showed only a single emission line. The ground-state electron configuration for these metals is [He]2s and [Ne]3s, respectively. Since there is only one electron in their valence shells (the rest of the electrons are core electrons), they are "almost" hydrogenic atoms, and we can try and use the Rydberg formula to explain their spectra. However, the emission line you observed for each does not correspond to a transition involving a change in principal quantum number, n. Rather, each involves a change in magnetic quantum number, l. We need to make some adjustments to get this to work.
1) I've provided the ground-state electronic configurations of these elements. Please write the excited-state electron configurationfrom which these elements emitted photons. (You may find this link useful, if you haven't already found something similar: https://physics.nist.gov/PhysRefData/ASD/lines_form.html Note that the spectroscopic notation here indicates a neutral atom as, e.g., Na i, a singly-ionized atom as Na ii, a doubly-ionized atom as Na iii, etc. It's just a historical convention.)
Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other
Titration of metal ion with EDTA. using the spreadsheet equation 11-11 to compute the curves (pM versys mL of EDTA added) for the titration of 10 mL of 1.00 mM M2+ (=Cd 2+ or Cu2+) with 10.0 mM EDTA at pH 5.00. Plot both curves on one graph.
A buffer is prepared by mixing 429 mL of 0.255 M NaOH with 677 mL of 0.795 M sodium bicarbonate (NaHCO3). Given that the Ka1of H2CO3 is 4.5 x 10-7
The product was then treated with toluene. Will the product result in the formation of 1-hexene, ethyl hexyl ether (1-ethoxyhexane), or both? Please explain.
A hypothetical metal has a simple cubic unit cell with the edge length of 4.123 Å. Calculate the radius of the metal atom.
Part a) Assuming volumes are additive, how much water (in mL) should be added to 12.4 mL of a 1.68 M solution of hydrochloric acid (HCl) to produce a 0.100 M solution
What is the difference between a common name, IUPAC name, a name in an international journal, and a name in an American journal? I understand how to do IUPAC names, but then I am confused at the rest.
Give the titration curve for the reaction of C5H5N with HCl. The known solution is the acid, and the base is added to the acid.
Use Hess's law and the measured mean enthalpy changes for the NaOH-HCl(36.2) and NH3-HCl(31.9) reactions to calculate the enthalpy change to be expected from the reaction: NaOH + NH4Cl----NaCl + NH3 +H2O
A nucleus of mass number 27 contains 14 neutrons. An atomic ion of this element has 10 electrons in it. Write the symbol for this atomic ion
A cylindrical steel pipe is used to transport hydrogen gas in a certain process. The density of the hydrogen in the pipe is 5kg/m3 and the density in the environment is effectively zero
A hypothetical reaction X + 2Y ® Products is found to be first order in X and second order in Y. What are the units of k, the specific rate constant, if reaction rate is expressed in units of moles per liter per second? A) M•s-1 B) M-2•s-1 C) M-3•..
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