KERALA PSC / CHEMISTRY / ATOM STRUCTURE / NOTES /
OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC
PRELIMINARY
KERALA PSC / CHEMISTRY / ATOM STRUCTURE / NOTES /
OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC
PRELIMINARY
Atom comprises a nucleus containing protons and
neutrons and electrons which revolve around it. The protons are positively charged;
electrons are negatively charged. The neutrons have no charge. Atomic Number
is the number of protons (positively charged mass units) in the nucleus of
an atom.
Atomic Number = Number of protons or Number of electrons (for a
neutral atom)
Atomic Mass or mass number
Mass Number = Number of protons + number of Neutrons
KERALA PSC / CHEMISTRY / ATOM STRUCTURE / NOTES /
OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC
PRELIMINARY
No comments:
Post a Comment