Flashcards
Atomic Structure
Flashcards do conjunto (5)
- 1An atom is made of three sub atomic particles. What are they and where in an atom are they found?Neutron - in an atoms nucleus
Proton - in an atoms nucleus
Electron - found in energy levels or shells - 2What is an atomic number and why is it so unique?The atomic number is the number of protons in an atoms' nucleus. Every element has a different atomic number. The periodic table is structured according to the atomic numbers.
- 3What is the relative charge and relative mass of protons, electrons and neutrons?Protons - +1, 1
Neutron 0, 1
Electron -1, 5.4*10 to the power -4 - 4In a neutral atom the number of electrons = ?Number of protons
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