Carbon nanotubes (CNTs) are classified as one-dimensional nanostructures because their length is significantly greater than their diameter, which is typically in the nanometer range. Properties include:
• Types: Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs).
• Exceptional properties: High tensile strength, excellent electrical conductivity, and thermal stability.
• Applications: Used in nanotechnology, electronics, and material science, including energy storage devices and drug delivery systems.
The 1D structure results in unique physical and electronic properties, making CNTs highly valuable in advanced applications.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: