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Atom Review. The smallest part of an element that retains the properties of the element is the ?. atom. Protons have a ___Charge?. positive. Neutrons have a _ charge ?. Neutral/ no charge. Electrons have a _ charge?. negative. What is found in the nucleus?. Protons and neutrons.
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The smallest part of an element that retains the properties of the element is the ?
What is the magic # for the electron shells? • Bonus points: +5: what are the other shell numbers?
2,8,8 for the 1st 18. • 2, 8, 18, 32,50, 72
The charge of the nucleus of an atom is due to the presence of
121 • 201 • -80 121
When determining an elements identity, what is the MOST important subatomic part to examine?
If you have many models of an atom, how do you determine which one has the lowest mass?
Find the mass of this atom. • 23 P • 15 N
38 • 23+15= 38
No charge • About same mass as a proton
What is the charge of an atom’s nucleus if it has • 17 protons, 20 neutrons, and 17 electrons
Developing the model of an atom as a build up of successive orbital shells of electrons. • The model we use today.
12 • Mg • 24 • 12 P, 12 N, 12 E • 2 e, 8 e, 2 e in last shell