Molecules that possess only london dispersion forces will have roughly the same melting points. true false

False

Explanation:

Non polar molecules possess dispersion forces due to momentary shifts in the electron cloud of the molecule. The molecular mass is important in deciding the extent of London dispersion forces. The greater the relative molecular mass, the greater, the greater the degree of London dispersion forces and vice versa. The greater the degree of London dispersion forces, the greater the melting and boiling points. Since all molecules possessing London dispersion forces do not all have the same relative molecular mass but widely different relative molecular masses, they cannot all have roughly the same melting point.

the atomic mass is the bottom number on the element.

-steel jelly

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.