arrange the given elements in the decreasing order of their valencies: potassium, calcium, argon, silicon, phosphorus.
Answers
Answered by
9
Answer:
(lowest to highest).
Silicon
Phosphorous
Argon
Potassium
Calcium
Explanation:
Answered by
0
Answer:
order of valencies from higher to lower:
Silicon > Phosphorus > Calcium > Potassium > Argon.
Explanation:
- Valency is the combining power of an element.
- We can say the valency of an element based on the group it belongs to.
- Silicon belongs to group 14. It belongs to carbon family.
- Valency of silicon = 18- group number = 18-14 = 4
- So valency of silicon is +4
- Phosphorus belongs to group 15 . It belongs to the nitrogen family.
- Valency of Phosphorus = 18 - group number
= 18 - 15 = 3
- So valency of Phosphorus is +3
- Calcium belongs to the family 2 . It belongs to alkali earth metals.
- So valency of calcium is 2.
- Potassium belongs to the family 1 . It belongs to alkali metals.
- So valency of potassium is 1.
- Argon is an inert element. It belongs to the group Noble gases. So valency of Argon is 0.
- So based on these the order of given elements based on valency is
Silicon > Phosphorus > Calcium > Potassium >Argon.
#SPJ2
Similar questions