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Chapter 2: Problem 39

What does a chemical formula represent? What is the ratio of the atoms in the following molecular formulas? (a) NO, (b) \(\mathrm{NCl}_{3}\) (c) \(\mathrm{N}_{2} \mathrm{O}_{4},\) (d) \(\mathrm{P}_{4} \mathrm{O}_{6}\)

Short Answer

Expert verified
Chemical formulas represent the proportion of atoms of each element in a chemical compound. The atomic ratios in the given formulas are: (a) NO - 1:1, (b) \(\mathrm{NCl}_{3}\) - 1:3, (c) \(\mathrm{N}_{2} \mathrm{O}_{4}\) - 1:2, (d) \(\mathrm{P}_{4} \mathrm{O}_{6}\) - 2:3.

Step by step solution

01

Understanding a chemical formula

A chemical formula describes the proportion of atoms of each element in a chemical compound, using atomic symbols and numerical subscript. If no subscript is present, it indicates one atom of that element.
02

Analyzing formula (a) - NO

The formula NO represents Nitric Oxide. It has 1 atom of Nitrogen (N) and 1 atom of Oxygen (O). So, the ratio of N to O is 1:1.
03

Analyzing formula (b) - \(\mathrm{NCl}_{3}\)

The formula \(\mathrm{NCl}_{3}\) represents Nitrogen Trichloride. It has 1 atom of Nitrogen (N) and 3 atoms of Chlorine (Cl). So, the ratio of N to Cl is 1:3.
04

Analyzing formula (c) - \(\mathrm{N}_{2} \mathrm{O}_{4}\)

The formula \(\mathrm{N}_{2} \mathrm{O}_{4}\) represents Dinitrogen Tetroxide. It has 2 atoms of Nitrogen (N) and 4 atoms of Oxygen (O). So, the ratio of N to O is 1:2.
05

Analyzing formula (d) - \(\mathrm{P}_{4} \mathrm{O}_{6}\)

The formula \(\mathrm{P}_{4} \mathrm{O}_{6}\) represents Tetraphosphorus Hexoxide. It has 4 atoms of Phosphorus (P) and 6 atoms of Oxygen (O). So, the ratio of P to O is 2:3.

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Most popular questions from this chapter

One isotope of a nonmetallic element has mass number 127 and 74 neutrons in the nucleus. The anion derived from the isotope has 54 electrons. Write the symbol for this anion.

Calculate the number of neutrons in \({ }^{239} \mathrm{Pu}\).

Name these compounds: (a) \(\mathrm{KClO}\) (b) \(\mathrm{Ag}_{2} \mathrm{CO}_{3}\) (c) \(\mathrm{FeCl}_{2}\), (d) \(\mathrm{KMnO}_{4}\), (e) \(\mathrm{CsClO}_{3}\), (f) \(\mathrm{HIO},(\mathrm{g}) \mathrm{FeO}\), (h) \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) (i) \(\mathrm{TiCl}_{4},(\mathrm{j}) \mathrm{NaH},(\mathrm{k}) \mathrm{Li}_{3} \mathrm{~N},\) (1) \(\mathrm{Na}_{2} \mathrm{O}\) (m) \(\mathrm{Na}_{2} \mathrm{O}_{2},\) (n) \(\mathrm{FeCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}\).

Name the types of radiation known to be emitted by radioactive elements.

Define, with two examples, the following terms: (a) alkali metals, (b) alkaline earth metals, (c) halogens, (d) noble gases.
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