Question

b) An element P (atomic number 20) reacts with an element Q (atomic number 17) to
form a compound
Answer the following questions giving reason.
i) Write the position of P and Q in the modern periodic table.
ii) Give the valency of P and Q.
Write the molecular formula of the compound formed when P reacts with Q.(3)​

Answer 1

Answer:

1. P - period (2), row (3), q - period (7) , row - (3)

2. p - 2,. q- 7

3.p -2 ,. q - 1

Explanation:

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