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WorksheetsUnderstanding Valency in Elements and Compound Formation
Total questions: 8
Worksheet time: 5mins
What is valency in chemistry?
The weight of an element
The color of an element
Combining power of an element
The boiling point of an element
How is valency determined for elements?
Based on the color of the element
By the number of protons in the nucleus
According to the atomic mass of the element
Based on the number of electrons an element needs to gain, lose, or share to achieve a full outer shell.
What is the valency of sodium in NaCl?
-1
2
0
+1
How does valency affect chemical bonding?
Valency affects chemical bonding by determining the number of bonds an atom can form and the type of bonds it can participate in.
Valency determines the color of the compound formed
Valency has no impact on chemical bonding
Valency affects the physical state of the compound
Determine the valency of chlorine in HCl.
2
3
4
1
Select all the scenarios below where we encounter elements with valency=2.
Methane (CH4)
Sodium chloride (NaCl)
Water (H2O)
Carbon dioxide (CO2)
Calculate the valency of nitrogen in NH3.
4
3
1
2
Select all examples from below where we find polyvalent (Valency of 3 or more) elements.
FeCl3 (Iron(III) Chloride)
CO2 (Carbon Dioxide)
NaCl (Sodium Chloride)
H2O (Water)
