University of Colorado GEOLOGY 1010 Class Note 2 Atoms and Elements, Isotopes and Ions . Atoms are composed of protons, neutrons, and electrons. A proton has an electric charge of +1 and a rest mass of 1.67 x 10-24 gm.
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If an atom has more or fewer electrons than protons, then it has an overall negative or positive charge, respectively, and it is called an ion. The negatively charged electrons of an atom are attracted to the positively charged protons in the nucleus by a force called electromagnetic force, for which opposite charges attract.
Atom - Atom - Atomic mass and isotopes: The number of neutrons in a nucleus affects the mass of the atom but not its chemical properties. Thus, a nucleus with six protons and six neutrons will have the same chemical properties as a nucleus with six protons and eight neutrons, although the two masses will be different.
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outermost region of the atom which holds its electrons in orbit around the nucleus, as illustrated in Figure 2.2. Atoms contain protons, electrons, and neutrons, among other subatomic particles.

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An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outermost region of the atom which holds its electrons in orbit around the nucleus, as illustrated in Figure 2.2. Atoms contain protons, electrons, and neutrons, among other subatomic particles.
Give the charge each atom takes when it forms an ion. If more than one charge is possible, list both. S; Na; H; Name the ions from Exercise 3. Name the ions from Exercise 4. Name the ions from Exercise 5. Name the ions from Exercise 6. Give the formula and name for each ionic compound formed between the two listed ions. Mg 2+ and Cl − Fe 2 ...
Below, on the left, is an image of a neutral fluorine atom containing nine protons, nine electrons, and ten neutrons. When fluorine enters into a compound, it picks up an electron from the atom it bonds with. The resulting ion, called a fluoride ion, contains ten electrons and nine protons, with an overall charge of 1- (F1-) Isotopes. Isotopes

Is oxide an atom isotope or ion

The loss or gain of electrons from an atom forms monoatomic ion in order to achieve the stability (noble gas electronic configuration, etc.). Oxygen has six electrons. The charge of oxide ion (O 2 −) is 2-. Sulfur has sixteen electrons. The charge of sulfide ion (S 2 −) is 2-. If an atom has more or fewer electrons than protons, then it has an overall negative or positive charge, respectively, and it is called an ion. The negatively charged electrons of an atom are attracted to the positively charged protons in the nucleus by a force called electromagnetic force, for which opposite charges attract. a) ions b) isotopes c) neutral atoms d) different atoms 37. Use the following table and choose which of the species are positively charged? Atom or ion element I II III IV V VI Atom or ion electrons (e) 6 10 18 10 28 7 Atom or ion protons (p) 6 8 17 11 30 7 Atom or ion neutrons (n) 6 8 18 11 36 6

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