The atomicity of Ozone
1
2
3
4
The mass of neutron is of the order of
1023 kg
10 -24 kg
10 -26 kg
10 -27 kg
Proton is
Nucleus of deuterium
Ionized hydrogen molecule
Ionized hydrogen atom
An x particle
Hydrogen molecule ion H2+ contain
One electron
2 electron
3 electron
No electron
Which do not react chemically with other elements or compounds?
Metals
Non - metals
Metalloids
Noble Gases
Atom consist of electrons , protons and neutrons . If the mass attributed to neutron were halved and that attributed to the electrons were doubled , the atomic mass of 6C12 would be approximately
Same
Doubled
Halved
Reduced to 25 %
An example for inert gas which is mono atomic
Hydrogen
Nitrogen
Oxygen
Helium
In an atom , the number of electrons outside the nucleus is equal to the number of
Neutrons in the nucleus
Protons in the nucleus
Neutrons plus protons in the nucleus
Neutrons minus protons in the nucleus
Which of following does not posses neutron
Molecules formed from smaller particles are called
Atoms
Ions
Elements
Compounds
