Use molecular orbital theory to determine whether He2 2+ or He2 + is more stable. Use molecular orbital theory to determine whether He2 2+ or He2 + is more stable. The He2 + ion is more stable since it has a higher bond order (bond order = 1) than the He2 2+ ion (bond order = 1/2). The He2 + ion is more stable since it has a higher bond order (bond order = 2) than the He2 2+ ion (bond order = 1). The He2 2+ ion is more stable since it has a lower bond order (bond order = 1/2) than the He2 + ion (bond order = 1). The He2 2+ a lower bond order (bond order = 3/2) than the He2 + ion (bond order = 2). The He2 2+ ion is more stable since it has a higher bond order (bond order = 1) than the He2 + ion (bond order = 1/2).

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?