Who proposed the name electron?
Stoney
Mullikan
J.J Thomson
James Chadwick
The atomic mass of an element is expressed in grams, is known as
Gram atomic mass
Gram molecular mass
Avagadro number
Molecular mass
_______ is the volume occupied by one mole of any gas at STP.
Molar volume
Atomic mass
Atomic number
Atoms having same mass number but different atomic number is known as
Isotopes
Isobar
Isotone
Allotropes
Volume occupied by imole of a gas at STP is
22.4l
24.2l
20.4l
24.4l
The number of atoms present in one molecule of an element is
Atomic number of an element
Molecular formula of an element
Atomicity of an element
Avagadro number of an element
_____ is spherical and most of the space in its empty.
Atom
Element
Molecule
Matter
____ is defined as the amount of substance that contains as many specified elementary particles.
Mole
Molecules
Elements
Neutrons
Atomic mass is expressed in
Atomic mass unit(amu)
Actual mass of an electron is
10.9 × 10-29 g
9.11 × 10-28g
8.12 × 1029g
9.8 × 10-31g