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Periodic Table questions with complete solutions

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Periodic Table questions with complete solutions

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  • August 13, 2024
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Periodic Table

Atomic number - correct answer ✔✔The number of protons in the nucleus of the atom



Atomic weight - correct answer ✔✔The mass of the protons and neutrons in the atom (electrons
basically weigh nothing)

-Protons and neutrons each weigh approximately 1 amu



Atomic Weight - correct answer ✔✔Based on the number of neutrons the majority of the element's
atoms have.



Isotopes - correct answer ✔✔Different atoms of an element can have a different amounts of neutrons



If there is a different number of neutrons than the average number for that element, the atom is an
isotope.



Calculating Numbers of Particles - correct answer ✔✔# of Protons = Atomic #

# of Electrons (usually) = Atomic #

# of Neutrons = Atomic Mass - Atomic #



Electron Energy Levels - correct answer ✔✔Electrons exist in region around the nucleus called energy
levels.

Each energy level holds a certain number of electrons.

Each period (row) on the periodic table represents a new energy level.



What do the different energy levels actually look like? - correct answer ✔✔Energy levels can be split into
"orbitals".

Each orbital contains two electrons. This is what it looks like when you put it all together.

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