CBSE Class 7 Answered
what is oxygen?
Asked by shamsher73414 | 26 Apr, 2023, 09:14: AM
Expert Answer
Dear Student,
Oxygen represented by the symbol 'O', is a member of the chalcogen group (group 16, period 2, atomic number 8) on the periodic table.
Electronic configuration of oxygen with atomic number 8 is [He]2s22p4.
It is p-block element. It is one of the most abundant elements in the Earth’s crust.
It is an essential element in most of the combustion processes.
Melting point = -219°C, Boiling point = -183°C
Relative atomic mass = 15.999
Answered by | 26 Apr, 2023, 09:38: AM
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