Valency and Valence Electrons
Chemistry ⇒ Atomic Structure and the Periodic Table
Valency and Valence Electrons starts at 8 and continues till grade 12.
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See sample questions for grade 9
An atom of element X has the electronic configuration 2, 8, 2. What is the valency of X?
An atom of element Y has 1 valence electron. What type of ion will it form?
An atom of phosphorus has the electronic configuration 2, 8, 5. What is its valency?
Describe how to determine the number of valence electrons in a main group element using the periodic table.
Describe the relationship between valence electrons and chemical reactivity.
Explain why elements in the same group have similar chemical properties.
Explain why noble gases are generally unreactive in terms of their valence electrons.
Explain why sodium forms Na+ ions.
Explain why the valency of nitrogen is 3.
How many valence electrons does a chlorine atom have?
If an atom has 3 valence electrons, what is its likely valency?
If an atom has 5 electrons in its outermost shell, what is its valency?
What is meant by the term 'valence electrons'?
What is the relationship between the number of valence electrons and the group number for elements in Group 17?
What is the valency of carbon?
What is the valency of fluorine?
What is the valency of magnesium?
What is the valency of oxygen?
