The amide group is an important structural unit in proteins. The simplest amide is formamide, HCONH2. In a valence bond picture of the C—N bond, hybrid orbitals of C overlap with hybrid orbitals of N. a. sp3; sp2
b. sp; sp2
c. sp2; sp
d. sp; sp
e. sp2; sp3

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.

Consider the lewis structure for ch4 methane is this molecule polar or nonpolar