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 11
A student is given the electronic configuration 2,8,8,1 for an element. What is the element and its valency?
An atom of phosphorus has the electronic configuration 2,8,5. What is its valency?
An atom of sulfur has the electronic configuration 2,8,6. What is its valency?
Describe how the octet rule relates to the concept of valency.
Describe the difference between valency and valence electrons.
Explain why elements in the same group of the periodic table have similar chemical properties.
Explain why noble gases are generally unreactive in terms of their valence electrons.
Explain why sodium forms Na+ ions and not Na2+ ions.
How many valence electrons does an atom of oxygen (atomic number 8) have?
If an atom has 2 valence electrons, what is its likely valency?
If an atom has the electronic configuration 2,8,7, what is its valency?
State the valency of nitrogen and explain your answer.
What is meant by the term 'valence electrons'?
Which group in the periodic table contains elements with 7 valence electrons?
