Nhich statement defines activation energy?
o it is the sum of the maximum energy and reactant energy.
it is the sum of the product energy and reactant energy.
o it is the difference between reactant energy and maximum energy.
it is the difference between product energy and reactant energy.

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

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.