Lesson 4 of 22
Chapter 1 summary and exercises
An Oxygen Atom has eight positively charged sub-atomic particles in its nucleus.
Given that the number of neutrons in the Oxygen Atom is also eight.
- Determine the composition of the oxygen atom.
- Give the atomic mass of the oxygen atom in a.m.u.
- Write the nuclide representation of the oxygen atom.
- Calculate the charge of the nucleus in the oxygen atom.
- Deduce the charge of the electronic cloud.
The nucleus of an Atom Y contains 11 protons and 12 neutrons.
- Determine the number of elections of this atom.
- Calculate the elementary nuclear charge of the atom.
- Write the nuclide presentation of atom Y.
- Identify the elements that come directly before and after atom Y in the periodic table.
- Knowing that Atom X has 11 protons and 14 neutrons, identify if Atoms X and Y are Isotopes.
- Knowing that Atom Y loses 1 electron to becomes stable, determine the charge of the ion formed.