Physical chemistry

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Last updated 9:42 AM on 9/16/26
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7 Terms

1
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How many electrons in 1 orbital

2e-

2
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What are electrons

Clouds of negative charge

3
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State the n.o electrons that can fit in each sub shell

S = 2e- p = 6e- d = 10e- f = 14e-

4
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Isotope definition

Some n.o protons but different number of neutrons, different isotopes of the same element chemically react the same due to having the same E.C

5
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What is the mass Spectrometer used for

Check for Mr or Ar of element or molecule

Identify elements

Measures the mass of atoms or molecules accurately

6
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Ar definition

Average mass of 1 atom / 1/12th mass of a 12C carbon atom

7
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State the steps of TIME OF FLIGHT mass spectrometre

  1. Ionisation

  2. Acceleration

  3. Drift

  4. Detection