ppl doin physics help me

[nimaz]

Osmium or Iridium depending on who you believe.


Osmium wins because the specific gravity of Iridium is very slightly lower than Osmium.

Density, or volumic mass, is a measure of mass per unit of volume.
Specific gravity, now usually called "Relative density" is the number obtained in comparison to water. The higher it is the more dense it is.

1 cc (cubic centimetre) of water weighs 1 gram and therefore has a relative density of 1.

Osmium is 22.57 but Iridium is only 22.42

 

[nimaz]

BUT
one can argue in this way as well!!
and say that Iridium wins.
Iridium wins when the density is calculated using the "space lattice" method, which is considered to be more accurate, when comparing it to Osmium.

An atom of Iridium has 77 protons, 77 electrons and 115 neutrons. At.wt. 192.22
An atom of Osmium has 76 protons, 76 electons and 114 neutrons. At. wt. 190.2

Osmium has a crystal structure that is "Hexagonal"
Iridium is a "Cubic face centred" crystal.

This crystal structure is how the atoms align with each other to form the material itself.

A good example to understand this is with Carbon. A very dense and very hard form is DIAMOND where the carbon atoms are very tightly and closely bonded together. A very soft form is GRAPHITE, where the carbons atoms are very loosely packed and easily parted from each other.

The Iridium structure's "space lattice" is more compact than that of Osmium such that more protons, neutrons and electrons fit into a unit volume and thus it is denser.

 

[nimaz]

Osmium or Iridium depending on who you believe.

i choose Osmium

 

[gn.karunarathna]

Any one knws wat is da highest density in da world..????(it can b anything n its nt da nucleus or Iridium)

dIAMONDS{ C }

 

[nimaz]

dIAMONDS{ C }

On the hardness scale, I believe diamond is the highest.

 

[ishreth]

Ovindu whts dis ask ur physics teacher witout troubling us

 

[ovindud]

Ovindu whts dis ask ur physics teacher witout troubling us

Oiii hes da one who ask 2 findout.....nway if u can find out tat 4 me....

 

[kosandpol]

Oiii hes da one who ask 2 findout.....nway if u can find out tat 4 me....

He's given you homework.
So do the homework and research it and LEARN. Dont come here and ask others to do your homework.

 

[dacoolest]

http://en.wikipedia.org/wiki/List_of_elements_by_density

 

[dacoolest]

http://en.wikipedia.org/wiki/Iridium

Iridium is the densest known substance at standard conditions for temperature and pressure.

source: http://en.wikipedia.org/wiki/Density

again wiki says,

The density of osmium is 22.61  g/cm3, slightly greater than the density of iridium, the second densest element.

source: http://en.wikipedia.org/wiki/Osmium


some says it is osmium. some says Iridium. its about who you believe.

in the universe, the highest dense would be the black hole. it could have an infinitely dense, as the theory.

 

[dacoolest]

The heaviest element that can exist on the earth would be Ununoctium (Uuo). it has the atomic weight of 294 g·mol−1

 

[djHiran]

electron

volume ---> 0 ; while mass is finite

 

[buddhikamh]

Well its said to be a 'black hole' has the hieght density, but im not sure whether it is the 'thing' what you actually wants.

 

[djHiran]

Well its said to be a 'black hole' has the hieght density, but im not sure whether it is the 'thing' what you actually wants.

u online? hey dude!

 

[ovindud]

He's given you homework.
So do the homework and research it and LEARN. Dont come here and ask others to do your homework.

i just ask that bcoz i could'nt find an exact answer 4 this.....ok nway do u knw whts da answer???

 

[ovindud]

Well its said to be a 'black hole' has the hieght density, but im not sure whether it is the 'thing' what you actually wants.

yeah dude me also thinks tat , its da answer.....we ll c when i get 2 knw the exact answer i ll let u guys know...