Answer: Number 9 is C p->iv, q->i, r->ii, s->iii
Number 10 is D P->iii, Q->iv, R-.ii, S->i
Explanation:
If you look up the words like mercury or sodium it will give you the meaning but if you have the meaning of those words then you will know then you will math if the meaning you have written down make sense with the example of the metal you have in the column and it matches then you have your answer.
