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2. Atoms and the Periodic Table

Isotopes

2. Atoms and the Periodic Table

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Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.b. How are these isotopes alike?

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Fill in the gaps for the following table of atoms.

Supply the missing information in the following table:

Write the atomic symbol for the isotope with each of the following characteristics:c. 25 electrons and 28 neutrons

Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.c. How are they different?

Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.a. Write the atomic symbol for each of these atoms.

Consider the following atoms in which X represents the chemical symbol of the element: (4.4, 4.5) ¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈Xd. What atoms have the same number of neutrons?

Consider the following atoms in which X represents the chemical symbol of the element: (4.4, 4.5) ¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈Xc. Which atoms have the same mass number?

Consider the following atoms in which X represents the chemical symbol of the element: (4.4, 4.5) ¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈Xa. What atoms have the same number of protons?

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