Define the atomic mass unit.

How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain.

One atomic mass unit is equal to weight of

Define Atomic size.

Write the 'IUPAC' name of the element whose atomic mass is 125

The atomic mass of hydrogen

What is atomic mass unit ? Describe.

Define centre of mass. Find the centre of mass of a triangular lamina.

An element X with atomic mass 60U has density 6.23gcm^-3 . If the edge length of its cubic unit cell is 400pm, identify the type of cubic unit cell calculate the radius of an atoms of this element.

Aluminium crystallises as face-centered cubic lattice and it has a density of 2.7xx10^3kgm^(-3) . Calculate edge length of the unit cell. Given atomic mass of aluminium equal to 27.0 amu.