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Question
Write the electronic configuration of element 17T35.
- What is the group number of T?
- What is the period number of T?
- How many valence electrons are there in an atom of T?
- What is the valency of T?
- Is it a metal or non-metal?
- State number of protons and neutrons in T.
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Solution
K L M
Electronic configuration = 2, 8, 7
- VIIA
- Third period
- Seven
- Valency of T = -1
- Non-metal
- Protons = 17, Neutrons = 18
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