Chemical elements are formed in the Universe by stellar nucleosynthesis.
Nuclear fusion
The process in which lighter elements stick together to create heavier elements is known as fusion. This is the process that will be used in the synthesis of a heavier atomic nuclei.
when the percentage of heaver elements is high density will be very high! for example you consider the planet mars it is heavier than earth why because the main element present in mars is helium this leads to greater mass ! we know the stars too have life i,e it undergoes many changes before becoming black hole! In the presence of heavier elements leads to heavier reactions inside the star and may leads to sudden explosions causing nova and super nova and due to these explosions outer parts of the star will explode and these objects will rotate around the universe as a dust ! and these will fall on earth as a meteors,aestroids and comets and finally i can say due to the presence of heavier elements it leads to causing distruction or minimisation of star
Elements heavier than iron are formed in super-nova explosions.
Heavier atoms which could not be formed as a result of fusion are produced as the result of a star that has run out of fuel exploding. It essentially forces atoms which do not release energy to fuse together.
Elements that are formed in cool stars are heavy but not heavier than iron. (Elements that are heavier than iron are formed in a supernova.)
It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.
These fusion (carbon , nitrogen , and oxygen) reactions form nuclei of sightly heavier elements.
nucleosynthesis
Older age might account for it. As a star ages, it uses up the simplest elements (hydrogen . . . helium . . .) then starts fusing heavier and heavier elements. Our Sun will get to the point of fusing iron, which is pretty heavy, but the truly large stars out there will fuse elements much heavier than Iron. These heavier and heavier elements may account for some stars having more complex elements in their spectra.
No. Heavier elements were created by nuclear reactions in previous generations of stars.
Almost all solid elements are heavier than air. This is why these elements do not float under normal atmospheric situations.