What is an Atom?#!#Tum Soch Nahi Sakte Itna Chota Hai Atom

What is the atomic number for A?

What is atomic mass unit (amu)?

If number of electrons in an atom is 8 and number of protons is also 8, then (i) what is the atomic number of the atom? and (ii) what is the charge on the atoms ?

What is an atom according to Dalton's Atomic theory ?

What is the nuclear model of the atom ?

A mineral having the formula AB_(2) crytallises in the cubic close-packed lattice, with the A atoms occupying the lattice points. What is the coordination number of the A atoms and B atoms ? What percentage fraction of the tetrahedral sites is occupied by B atoms ?

The atomic mass of helium is 232 and its atomic number is 90. During the course of its radioactive disintegration 6 alpha and 4 beta -particles are emitted. What is the atomic and atomic number of the final atoms?