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The electron configuration 1s22s22p63s23p3 is for which of the following elements?

Elements within the same group in the periodic table have the same number of what?

Religious persecution was one of the reasons people immigrated to America 

Which of the following did the “Last Arrow Pageant” ritual symbolize?

A 2.39-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid–base indicator is added, and the resulting solution is titrated with 2.50 M HCl(aq) solution. The indicator changes color, signaling that the equivalence point has been reached, after 17.0 mL of the hydrochloric acid solution has been added. What is the identity of the alkali metal cation?

The thirty-eight Sioux who were found guilty after the Dakota War in the year 1862 were hanged in what was the largest mass execution in American history at the time.

Which specific type of hardship did homesteaders face as they developed their land?

How many orbitals are in a p-level?

Calculate the energy of 1 photon of light from this same laser pointer in question #6. Given E = hν and Planck’s constant is 6.626 x 10-34 J/sec.

A majority whose political will is usually not heard—in this case, northern, white, blue-collar voters