True or false.
when covalent bonds are formed between atoms having different electronegativities, the electrons tend to spend less time at the atom with the greater electronegativity. such chemical bonds are called polar covalent bonds.

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

The fact that the total amount of energy in a system remains constant is a(n)

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %