Quantum Mechanical Model

Who is the Greek philosopher that developed the idea about atoms in 500 BC?

• Dalton

• Plato

• Aristotle

• Democritus

What model of the atom replaced Bohr's model?

• Heisenberg's model

• Thomson's model

• Rutherford's model

• Quantum Mechanical model

Regions in which electrons are likely to be found is called

• atomic orbitals

• principal energy level

• energy sublevel

• spin

What atom matches this electron configuration? 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰?

• ₃₀Zn

• ₂₉Cu

• ₂₆Fe

• ₄₀Zr

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What is the electron configuration for a Sulfur atom (₁₆S) ?

• 1s² 2s² 2p⁶ 3p⁶

• 1s² 2s² 2p⁶ 3s²3p⁶

• 1s² 2s² 2p⁶ 3s²3p⁴

• 1s² 2s² 2p⁶ 3s²3d⁶

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The electron configuration of an atom is 1s²2s²2p⁶. The number of valence electrons in the atom is

• 6

• 8

• 2

• 10

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Given the Oxygen's electron configuration ₈O 1s²2s²2p^4, it will give us an idea that Oxygen belongs to group number___

• 2

• 4

• 6

• 8

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In which period of the periodic table of elements would you find ₂₆Fe with an electron configuration of 1s²2s²2p⁶3s²3p⁶4s²3d⁶,

• 3

• 4

• 5

• 6

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NGSS.HS-PS1-1

How many valence electrons are represented here?

• 2

• 5

• 7

• 8

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A region around the nucleus of an atom where an electron is likely to be moving is called

• atomic orbital

• principal energy level

• energy sublevel

• spin