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(natural) Boiling Point: -252.77 C Freezing Point: 0 C Melting Point: -259.2 C Atomic Number: 1 Atomic Mass: 1.00797 H This element was founded by Henry.
Periodic Table Powerpoint
9 wi’s compounds
4.3 (a) group 1
Periodic table
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Group 17,halogen
Periodic Table of the Elements. Select an element = Internet link ()
Periodic Table of the Elements
NIRUPAMA ROY Assistant Teacher South Point School & College
