0
Volume of an atom of radius r = 4/3πr3
Volume ofnanoparticle of radius R = 4/3πR3
Volume of the particle = n (volume of the atom)
4/3πR3 = n 4/3πr3
R = n1/3r
Number of atoms on the surface = 4πR2/πr2
= 4πn2/3r2/πr2
= 4n2/3
Dr. A. MAHESH KUMAR
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Do nanoparticles have colors?
We cant really see nanoparticles to tell if they have colours, some do depending on what they are made from, but more commonly we see nanoparticles as a suspension in water, ethanol or some other solvent. These solutions can give rise to some intense colours, this is due to raylaigh scattering that takes place from the nanoparticles. A phemonon called surface plasmon resonance also has a part to play in the colours that we see for colloidal nanoparticles.
How are nanoparticles useful in producing industrial catalysts?
Can you recognize Cu nanoparticles without TEM microscopy?
Who found nanoparticles?
Michael Faraday is generally considered to be the first person to conduct scientific research on nanoparticles.
What is the effect of silver nanoparticles in plastic?
Silver nanoparticles are antibacterial, and when embedded in plastics for use in the medical field, are non-toxic. This makes silver nanoparticles useful in plastic applications such as surgical catheters.
How do you calculate surface density?
How can you calculate surface density if the volume density is 1.4 g/cm3
Surface-area-to-volume ratio in nanoparticles?
Surface area to volume ratio in nanoparticles have a significant effect on the nanoparticles properties. Firstly, nanoparticles have a relative larger surface area when compared to the same volume of the material. For example, let us consider a sphere of radius r: The surface area of the sphere will be 4πr2 The volume of the sphere = 4/3(πr3) Therefore the surface area to the volume ratio will be 4πr2/{4/3(πr3)} = 3/r It means that the surface area to volume ration increases with the decrease in radius of the sphere and vice versa.
Do nanoparticles have colors?
We cant really see nanoparticles to tell if they have colours, some do depending on what they are made from, but more commonly we see nanoparticles as a suspension in water, ethanol or some other solvent. These solutions can give rise to some intense colours, this is due to raylaigh scattering that takes place from the nanoparticles. A phemonon called surface plasmon resonance also has a part to play in the colours that we see for colloidal nanoparticles.
How are nanoparticles constructed in to mascara's?
Nanoparticles are put into mascara\'s to reduce clumping. Nanoparticles are made out of the soot from a candle flame.
Why are nanoparticles used in textiles?
because teh nanoparticles are so good
What is the difference between nano and bulk material?
Nanoparticles behave quite different from their bulk of the same composition due to the high surface to volume ratio.
How are nanoparticles useful in producing industrial catalysts?
Can you recognize Cu nanoparticles without TEM microscopy?
Are nanoparticles the same as ordanary particles?
no they are not. nanoparticles are much smaller than normal/ordinary particles
Mass number used to calculate the number of?
the mass number of an atom is used to calculate the number of neutrons and protons in the nucleus of an atom
Who found nanoparticles?
Michael Faraday is generally considered to be the first person to conduct scientific research on nanoparticles.
To calculate the area of the front surface of a box you---?
to calculate the area of the front surface of a box you should
How do you calculate surface density?
How can you calculate surface density if the volume density is 1.4 g/cm3
What is the effect of silver nanoparticles in plastic?
Silver nanoparticles are antibacterial, and when embedded in plastics for use in the medical field, are non-toxic. This makes silver nanoparticles useful in plastic applications such as surgical catheters.
