# Atom composition (simple question but hard for me)

• asz304
In summary, an atom is the smallest unit of matter that makes up all elements. It is composed of a nucleus containing protons and neutrons, and orbiting electrons. Atoms of different elements have different numbers of protons, neutrons, and electrons. The atomic number of an element is determined by the number of protons in its nucleus. Atoms can form compounds by combining through chemical bonds, which can be ionic, covalent, or metallic depending on the elements involved and their electron configurations.
asz304

## Homework Statement

Fe3(Co)x, Fe is 33.26% by mass. Find the value of x.

## The Attempt at a Solution

167.5425 g / 0.3326 = x ( 58.9326 g) / 0.6628

x = 5.6...

but the right answer given was x=12.

question #30:http://www.chem.mun.ca/courseinfo/c1050/Louise_Dawe/Basic%20Chemical%20Concepts%20I.pdf"

Thanks

Last edited by a moderator:
Co or CO?

Co, cobalt.

## 1. What is an atom?

An atom is the basic unit of matter that makes up all elements. It is the smallest particle of an element that still retains the properties of that element.

## 2. What is the composition of an atom?

An atom is composed of a nucleus, which contains protons and neutrons, and electrons that orbit around the nucleus.

## 3. How are atoms of different elements different?

Atoms of different elements have a different number of protons in their nucleus, which determines the element. They may also have different numbers of neutrons and electrons.

## 4. What is an atomic number?

The atomic number of an element is the number of protons in its nucleus, and it determines the element's properties. Atoms with the same atomic number belong to the same element.

## 5. How do atoms form compounds?

Atoms combine with each other through chemical bonds to form compounds. These bonds can be ionic, covalent, or metallic. The type of bond depends on the elements involved and their electron configurations.

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