Question

write the valency of elements having atomic number 5 to 15​

Answer 1

atomic number. valency. element

5. boron.

6. 4. carbon

7. 3. nitrogen

8. 2. oxygen

9. 1. flourine

10. 0. neon

11. 1. sodium

12. 2. magnesium

13. 3. aluminum

14. 4. silicon

15. 3,5. Phosphorus

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Answer 2

Answer:

• 5th = boron (B) valency is +3
• 6th = carbon (C) valency is +-4
• 7th = nitrogen (N) valency is -3
• 8th = oxygen (O) valency is -2
• 9th = flourine (F) valency is -1
• 10th = neon (Ne) valency is 0
• 11th = sodium (Na) valency is +1
• 12th = magnesium (Mg) valency is +2
• 13th = aluminium (Al) valency is +3
• 14th = silicon (Si) valency is +-4
• 15th = phosphorous (P) valency is-3

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