M3: L-1 Flashcards

1
Q

What did Rutherford discover about the atom in 1911?

A

Almost all of the mass is in the nucleus / protons + neutrons and electrons orbit them

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2
Q

What did Schroder get help to show in 1926?

A

Electrons exist in orbitals of defined energies

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3
Q

What is the order of increasing energies of the first 9 orbitals

A

1s, 2s,2p, 3s, 3p, 4s, 3d, 4p, 5s

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4
Q

What is a covalent bond?

A

A shared pair of electrons between two atoms

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5
Q

What is the 5 step procedure for drawing Lewis structures

A
  1. Count the valence electrons for each atom
  2. Assemble the bonding framework using single covalent bonds
  3. Place 3 non-bonding pairs of electrons on each outer atom
  4. Assign the remaining valence electrons to inner atoms
  5. Minimise formal charges on all atoms
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6
Q

What is a molecule called/ said to have when more than one Lewis structure can be drawn?

A

Resonant/ resonance

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