Which of the following elements has 3 electrons in the 2p sublevel? O A. O
O B. C
O C. B
O DN

U whay do you need with?

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

Ithink the answer is d.