Which type of reaction does this diagram represent? A small ball heads toward a large circle labeled superscript 235 upper U. An arrow points to an irregular circle labeled superscript 236 upper U. Another arrow points to a starburst, partially overlaid by 2 blobs labeled superscript 92 upper K r and superscript 141 upper B a, and with 3 small balls heading away from the starburst. nuclear fusion because nuclei combine to form a heavy nucleus nuclear fission because an atom is splitting into two large fragments of comparable mass nuclear fusion because a large amount of energy is being released nuclear fission because the resulting products are not radioactive