Ethylene has d2h symmetry. a. list all the symmetry operations of ethylene.

b. - tion that describes the effect of that operation on the coordinates of a point x, y, z.

c. using the characters of your transformation matrices, obtain a reducible representation.

d. using the diagonal elements of your matrices, obtain three of the d2h irreducible representations.

e. show that your irreducible representations are mutually orthogonal.

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.

  the mississippians were considered to be  horticulturalists, which means they were

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic