M-K Chemistry I: Fall 2014 MWF 10:3 CHEMISTRY Ch. 4 online homework prev Questio
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M-K Chemistry I: Fall 2014 MWF 10:3 CHEMISTRY Ch. 4 online homework prev Question #23 (of 31) next 23 value 10.00 points 3 out of 10 attempts NetCalculator Enter your answer in the provided box in scientific notation A hydrogen-like ion is an ion containing only one electron. The energies of the Assistance electron in a hydrogen-like ion are given by Check My Work View Hint (2.18 x 10 18 0JZ View Question Practice This Question where n is the principal quantum number and Z is the atomic number of the element Print Calculate the ation energy (in kJ/mol) of the He ion Question Help Report a Problem x 10 M references ebook & resourcesExplanation / Answer
En = - (2.18 * 10^-18) * Z2 * 1/ n^2
for He+ (configuration) = 1s1
Z= 2 (atomic number)
n= 1 (pricipal quantum number ,1s)
En = - (2.18 * 10^-18) * (2) ^2 * 1/ (1) ^2
En = - (2.18 * 10^-18) * 4 * 1
En = - 8.72 *10^-18 J
En = - 8.72 *10^-21 J
En /mol = -8.72x10^-21 KJ * 6.022x10^23/ 1 mol
E/mol = - 52.51x10^2 K J/ mol
En = - 5.251 * 10^3 Kj /mol (answer)
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