| An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Answer the following questions giving reason: |
| Write the position of P and Q in the Modern Periodic Table and the molecular formula of the compound formed when P reacts with Q. |
Answer:
P = 20: 2, 8, 8, 2
Q =17: 2, 8, 7
P = Period 4 and Group 2
Q = Period 3 and Group 17
Hence formula of the compound formed between P and Q is \[P{{Q}_{2}}\]
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