Atoms having same mass number but different atomic number is known as
Isotopes
Isobar
Isotone
Allotropes
____ is defined as the amount of substance that contains as many specified elementary particles.
Mole
Molecules
Elements
Neutrons
_______ is the volume occupied by one mole of any gas at STP.
Molar volume
Atomic mass
Molecular mass
Atomic number
Volume occupied by imole of a gas at STP is
22.4l
24.2l
20.4l
24.4l
A _______ is the smallest particle of an element or compound.
Molecule
Atom
Nucleus
Neutron
The total number of protons and neutrons present in atom is called
Mass number
Avagadro number
Isotope
The total number of protons or electrons present in an atom is called
Atomic mass is expressed in
Gram atomic mass
Atomic mass unit(amu)
Gram molecular mass
Who proposed the name electron?
Stoney
Mullikan
J.J Thomson
James Chadwick
____ is considered to be a divisible particle.
Matter
Element
