Which one of the following statements is true for an atom that has full s and p orbitals in its outermost energy level?

a. it's highly reactive only with halogens.
b. it has a stable octet and is unreactive.
c. it's highly reactive only with alkali metals.
d. it can be combined with most elements.

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.