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CHEMISTRY

Chemistry
The antiparticle of an electron is

Positron
Proton
Beta particles
Alpha particles

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Chemistry
Nucleons are regarded as composites sub-particles known as

Quarks
Mesons
Photons
Leptons

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Chemistry
Conduction band electrons have more mobility than holes because they

Need less energy to move them
Have negative charge
Are lighter
Experience collision less frequently

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Chemistry
Which one of the following has greatest mass ?

Electron
Neutron
Proton
Hydrogen nucleus

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Chemistry
The nuclear particle having no mass and no charge, but only spin is

Proton
Neutrino
Electron
Meson

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