Atoms of i-131 spontaneously decay when the(1) stable nuclei emit alpha particles
(2) stable nuclei emit beta particles
(3) unstable nuclei emit alpha particles
(4) unstable nuclei emit beta particles

Answer;

(4) unstable nuclei emit beta particles

Atoms of I-131 spontaneously decay when the unstable nuclei emit beta particles.

Explanation;

-Unstable nuclides undergo spontaneous change or the spontaneous decay by emitting radiations to attain stability. Stability of isotopes is based on the ratio of neutrons and protons in its nucleus. Although most nuclei are stable, some are unstable and spontaneously decay, emitting radiation.

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.