10 Questions
How many valence electrons does nitrogen (N) have?
5
What is the valence electron configuration of carbon (C)?
2s² 2p²
How many valence electrons do elements in Group 18 (Noble Gases) have?
8
What is the valence electron configuration of oxygen (O)?
2s² 2p⁴
How many valence electrons do elements in Group 17 (Halogens) have?
7
How many valence electrons do elements in Group 2 (Alkaline Earth Metals) have?
2
Why is it more complex to determine the group number for transition metals solely from their electronic configuration?
Transition metals have varying numbers of valence electrons and can exhibit multiple oxidation states.
What is the electronic configuration of boron (B) and how many valence electrons does it have?
1s² 2s² 2p¹, 3
Explain why the group number for transition metals is usually not solely determined by the number of valence electrons.
Transition metals often exhibit multiple oxidation states and can lose different numbers of electrons to form ions.
What is the electronic configuration of lithium (Li) and how many valence electrons does it have?
1s² 2s¹, 1
Learn how to determine the group number for each group in the periodic table based on the number of valence electrons in an element's electronic configuration.
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