If element A is in Group 2 and element B is in Group 17, what will be the formula if they bond together? a. A2B3
b. AB
c. AB2
d. A2B

How to convert a density of 0.791g/cm3 to lb/ft3

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.