What is the electronic configuration of Ca2+ ?

} LIOH -Cl tN NO Hasoy socla E13N CI

why is this S configuration, can you explain how it is so

When B-carotene is oxidised in vivo, it breaks in half and forms two molecules of retinal (vitamin A), which is a precursor to the pigment in the retina responsible for vision. The conjugated system of retinal consists of eleven C atoms and one O atom; see the structure of the molecule here: H3C CH3 ÇH3 ÇH3 `CH3 In the ground state of retinal, each level up to n = 6 is occupied by two electrons. Assuming an average inter-nuclear distance of 140 pm, use the particle-in-a-box model to calculate: a. the separation in energy between the ground state and first excited state in which one electron occupies the state with n = 7, and b. the frequency of the radiation required to produce a transition between these two states.

Are the two carbon atoms of C2H5Cl equivalent?

What is the R,S configuration?

1. CHǝMgBr A 2. H3O+ 1. KCN B 2. H3O+ 1. CH3Li C 2. H3O+ 1. (CH3)2CULI 2. H3O+ Done

The correct name for the covalen molecule, N5C17 is:

What is the C-P bond order in BrCP?

But why is KC1 inverted? I still dont understand why. why isn't it just Kc2 x Kc1.