For which of the following elements is the process of attaching the first electron the most exothermic? اختر احدي الدجابات H. Na O o The first ionization energy of Na iz 496 kJ mol. Give this value in eV if 1 eV= 96.485 kJ mol'? اختر احدي الدجابات O5.014 eV 5 ev. 0.194 eV O5.14 eV

Write the full electron configuration for a Ca+ ion. electron configuration: Write the full electron configuration for an O+ ion. electron configuration: ? 46 SEP 27 280

Question 14 of 36 What values are needed to determine the energy of an electron in a many-electron atom? me What information is most important in determining the size of an orbital? O me What information is needed to determine the orientation of an orbital? me 口口 O O O O O O

Conside. following data for osmium: atomic mass electronegativity electron affinity ionization energy heat of fusion 190.23 106.1 2.20 840. 31. mol Explanation kJ mol kJ mol You may find additional useful data in the ALEKS Data tab. kJ mol Does the following reaction absorb or release energy? (1) Os (g) → Os (g) + e 1 Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? Check If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): Does the following reaction absorb or release energy? (2) Os (g) + e - Os (g) Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): Q Search release absorb O Can't be decided with the data given. yes Ono kJ/mol O release O absorb O Can't be decided with the data given. yes no…

8. Which of the following equations represents process used to determine the ionization energy? A. X(g) → X*(g) + e¯ В. X"(g) — х(аq) С. X(g) + e > Х (g) D. X*(g) + e → X(g)

Coulomb's Law yields an expression for the energy of interaction for a pair of point charges. 2.31 x 10-19Q1 Q2 V= V is the energy (in J) required to bring the two charges from infinite distance separation to distance r (in nm). Q1 and Q2 are the charges in terms of electrons. (i.e. the constant in the above expression is 2.31x10-19 J nm electrons²) For a group of "point" charges (e.g. ions) the total energy of interaction is the sum of the interaction energies for the individual pairs. Calculate the energy of interaction for the linear arrangement of ions shown in the diagram below. -2 d +2 d = 0.670 nm. -2 (+2) d

The electron configuration of indium is [Kr]5s²4d¹05p¹. How many electrons does a neutral atom of indium have? 49 How does this element complete its octet? Indium forms compounds with chlorine; one example is the formation of InCl (indium (I) chloride). What electron do you think indium gave up? Why?

It takes 839. kJ/mol to break a carbon-carbon triple bond. Calculate the maximum wavelength of light for which a carbon-carbon triple bond could be broken by absorbing a single photon. Round your answer to 3 significant digits. nm x10 X Ś

Silicon is the second most abundant element in the Earth's crust, and its compounds can be as ordinary as beach sand. However, silicon also plays an indispensable role in modern devices such as computers, cell phones, semiconductors, and solar panels. A recent technology incorporates silicon in nanometer-sized particles called quantum dots that act as luminescent labels for pancreatic cancer cells (ACS Nano 2008, 2, 873-878). Identify the electron configuration of a silicon atom. O 1s²2s²2p63s²3d¹03p³ O 1s²2s²2p63p4 O 1s²2s²2p63s²3p² O 1s²2s²2p63s²3p³

Which of the following statements about electronic configurations of atoms and mononuclear ions, and atomic orbital quantum numbers, are true or false.     Fe3+ has the same electronic configuration as V.    Sr2+ has the same electronic configuration as Kr.    The magnetic quantum number is always an odd number.    The valence electronic configuration of bromine is 4s24p5.    The value of ℓ is always equal to n minus one