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Chem 1205 Things To Know > Atomic Structure > Flashcards

Atomic Structure Flashcards

1
Q

What is the abbreviation for proton and where is it found?

A

Abbreviation: p or p+
Found: In nucleus

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2
Q

What is the abbreviation for neutron and where is it found?

A

Abbreviation: n
Found: In nucleus

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3
Q

What is the abbreviation for electrons and where is it found?

A

Abbreviation: e^-
Found: in the space around the nucleus

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4
Q

Is the nucleus small compared to the electron cloud?

A

Yes

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5
Q

What is A (circle above A)

A

Length of unit for very small distances

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6
Q

What is the A (circle above A) for the nucleus?

A

1x10^-4 A (circle above A)

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7
Q

What is the A (circle above A) for the electron cloud?

A

1-5 A (circle above A)

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8
Q

What is a protons charge?

A

+1

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9
Q

What is a protons mass? (AMU)

A

1.0073

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10
Q

What is a neutrons charge?

A

None

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11
Q

What is a neutrons mass? (AMU)

A

1.0087

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12
Q

What is electrons charge?

A

-1

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13
Q

What is electrons mass (amu)

A

5.486x10^-4

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14
Q

Which of these has no mass?

  • neutron
  • proton
  • electron
A

Electron

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15
Q

What does amu stand for?

A

Atomic mass unit

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16
Q

What is amu?

A

A unit for very small masses

17
Q

1amu is how many grams?

A

1amu=1.66054x10^-24

18
Q

What is an elements mass number?

A

Protons plus neutrons

19
Q

How do you find an elements number of protons?

A

Look at the periodic table

20
Q

What is an isotope?

A

The same element with different number of neutrons

21
Q

What is relative abundance?

A

How much of each isotope there is

22
Q

What is the equation for atomic weight?

A

Atomicweight= Σ [(isotope mass)x (fractional isotope abundance)]

23
Q

To find the average mass of atomic weights, Both fractional isotope abundances must add up to?

A

100%

Chem 1205 Things To Know (9 decks)

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