What is the relationship between the period and the orbital radius? Select one: a. It is a direct relationship- As the period increases the orbital radius also increases. b. It is an inverse relationship- As the period increases the orbital radius decreases.

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided