Final answer:
The ratio of atoms in a molecular formula can be determined by analyzing the subscript numbers of each element in the formula.
Step-by-step explanation:
The ratio of atoms in a molecular formula can be determined by looking at the subscript numbers that indicate the number of atoms of each element in the formula. Let's analyze each of the given molecular formulas:
(a) In the formula 'NO,' there is 1 nitrogen atom and 1 oxygen atom, so the ratio is 1:1.
(b) In the formula 'NCl3,' there is 1 nitrogen atom and 3 chlorine atoms, so the ratio is 1:3.
(c) In the formula 'N2O4,' there are 2 nitrogen atoms and 4 oxygen atoms, so the ratio is 2:4, which simplifies to 1:2.
(d) In the formula 'P4O6,' there are 4 phosphorus atoms and 6 oxygen atoms, so the ratio is 4:6, which simplifies to 2:3.