Jimmer is playing basketball. after 24 seconds, the shot clock goes off and he loses the ball. this happens every time he gets the ball because he refuses to pass or shoot. which of the following statements is true? jimmer is on a fixed-interval schedule of reinforcement. jimmer is on a variable-interval schedule of reinforcement. jimmer is on a fixed-ratio schedule of reinforcement. jimmer is on a variable-ratio schedule of reinforcement.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."