If a copper penny weighing 3.045 g is dissolved in a small amount a
of nitric acid and the resultant solution is diluted to 50.0 mL with
water, what is the molarity of the Cu(NO3)2?

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

answeridentity;

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.