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1. • • The reason increasing atomic number doesn't always equate to increasing mass is because many atoms don't have the same number of neutrons and protons. In other words, several isotopes of an element may exist.
     www.thoughtco.com/increasing-atomic-number-vs-mass-608816

     Increasing Atomic Number Doesn't Always Increase Mass - ThoughtCo

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   Does increasing the number of protons increase atomic mass?

   • Protons, Neutrons, and Isotopes Since atomic number is the number of protons in an atom and atomic mass is the mass of protons, neutrons, and electrons in an atom, it seems intuitively obvious that increasing the number of protons would increase the atomic mass.

   Increasing Atomic Number Doesn't Always Increase Mass - ThoughtCo

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   Does atomic mass increase with atomic number?

   • The atomic mass generally increases with atomic number with a few exceptions. The atomic number equals the number of protons in an atom. The atomic number is what the periodic table is based on. So the atomic number increases with each element. The atomic mass is the sum of the protons and neutrons.

   What are the periodic trends for atomic number and atomic mass

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   How does atomic size increase on periodic table?

   • Atomic size decreases as we move from left to right in a period . As period number increases , number of shells increase , so atomic size increases .

   Periodic Trends in Atomic Size - Chemistry - Socratic

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   What determines the mass of an atom?

   • The mass of an atom is a weighted average that is largely determined by the number of its protons and neutrons, whereas the number of protons and electrons determines its charge. Each atom of an element contains the same number of protons, known as the atomic number (Z). Neutral atoms have the same number of electrons and protons.

   2.4: Atomic Mass - Chemistry LibreTexts

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   Why does the atomic radius shrink?

   • As you move to the right, the atomic number increases, meaning the number of protons increases. In addition, the number of electrons increases. However, because the mass of the proton is about 1836 times the mass of the electron, the strong nuclear force that attracts them is significant, shrinking the atomic radius.

   How does the number of protons relate to atomic size?

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   What are the periodic trends for atomic number and atomic mass?

   • The atomic number increases across a period and down the group or family. The atomic mass generally increases with atomic number with a few exceptions. The atomic number equals the number of protons in an atom. The atomic number is what the periodic table is based on.

   What are the periodic trends for atomic number and atomic mass

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3. chem.libretexts.org › Courses › Furman_University3.4: Atomic Mass and Atomic Number - Chemistry LibreTexts

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   Jun 26, 2023 · Experimental data showed that the vast majority of the mass of an atom is concentrated in its nucleus, which is composed of protons and neutrons. The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom.

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5. chem.libretexts.org › Bookshelves › General_Chemistry8.6: Periodic Trends in the Size of Atoms and Effective ...

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   Aug 14, 2020 · As we will discuss later on in the chapter, this phenomenon can explain the decrease in atomic radii we see as we go across the periodic table as electrons are held closer to the nucleus due to increase in number of protons and increase in effective nuclear charge.

6. socratic.org › periodic-trends-in-atomic-sizePeriodic Trends in Atomic Size - Chemistry - Socratic

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   Mar 15, 2018 · Atomic size decreases from left to right, because the addition of protons to the nucleus increases the nuclear charge. Atomic size tends to increase from top to bottom because of the additional rings of electrons.

7. chem.libretexts.org › Bookshelves › General_Chemistry2.4: Atomic Mass - Chemistry LibreTexts

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   The relative masses of atoms are reported using the atomic mass unit (amu), which is defined as one-twelfth of the mass of one atom of carbon-12, with 6 protons, 6 neutrons, and 6 electrons. The atomic mass of an element is the weighted average of the masses of the naturally occurring isotopes.

8. socratic.org › questions › how-does-the-number-ofHow does the number of protons relate to atomic size?

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   Apr 25, 2015 · As you move to the right, the atomic number increases, meaning the number of protons increases. In addition, the number of electrons increases. However, because the mass of the proton is about 1836 times the mass of the electron, the strong nuclear force that attracts them is significant, shrinking the atomic radius.

9. socratic.org › questions › what-are-the-periodicWhat are the periodic trends for atomic number and atomic mass?

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   Dec 26, 2016 · The atomic number increases across a period and down the group or family. The atomic mass generally increases with atomic number with a few exceptions. The atomic number equals the number of protons in an atom.