Alkali metals

a. group 1 elements
b. elements that make up the f block
c. elements of the s and p blocks
d. group 17 elements
e. entire set of d-block elements

you gotta add the following molecules so we can give u an answer

explanation:

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.