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Chem > 1.2 > Flashcards

1.2 Flashcards

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1
Q

1 3 4 5 6 7 8
⬇️2 ⬇️⬇️⬇️⬇️⬇️⬇️
⬇️⬇️🟦🟦🟦🟦🟦⬇️⬇️⬇️⬇️⬇️⬇️
⬇️⬇️🟦🟦🟦🟦🟦⬇️⬇️⬇️⬇️⬇️⬇️

A

Valence Electrons

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2
Q

Graph What’s Happening? 📈

H-50
Li-155
Na-158
K-259
Rb-254

A
  • The spikes on the graph indicate a new row, meaning - a new energy level added to the element
  • A point means a new row
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3
Q

Why is the atomic radius of a neutral atom smaller than anion ? ➖

A

The added electron is pushing the other electrons further away from each other

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4
Q

What factors affect the radius of an atom

A

The amount of electrons and protons with their force/energy

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5
Q

How does the radius of an atom affect the ability of the protons in the nucleus to hold on to and attract electrons? 〰️

A

Electrons protons between their changes

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6
Q

What factors affect the radius of an atom ❇️🌟➖

A

Amount of electron and Protons between energy levels

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7
Q

How does the radius of an atom affect the ability of the protons in the nucleus to hold on to and attract electrons ⚫️ •

A

The bigger the radius the harder it is to hold on
the smaller the easier

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8
Q

Why does atomic radius tend to increase as you move down a group but decreases as you move across the rows of the periodic table

A

Increasing amount of protons

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9
Q

The distance from the nucleus to the outermost valence shell

A

Atomic Radius

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10
Q

The energy needed to remove an electron from an atom or ion in its gaseous state

A

Ionization energy

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11
Q

The change in energy that occurs when an electron is added to a nuestros atom in the gaseous state

A

Electron affinity

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12
Q

The ability of an atom to attract electrons from outside ➖😡

A

Electronegativity

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13
Q

The amount of energy released when a nuestras atom or molecule gains an electron from outside

A

Electron affinity

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14
Q

To make a full valence shell

A

8 v.e

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15
Q

Less that 4 valence electrons

A

Likely to lose

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16
Q

More than 4 valence electrons

A

Likely to gain

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17
Q

Which transition would be associated with the greatest energy of emitted light? 🖇️🧷

A

N=5
N=1

18
Q

The atomic emission spectra of a helium atom on Earth and of a helium atom in the sun would be?

A

The same

19
Q

Emission of light from an atom occurs when an electron?⬆️⬇️

A

Drops from a higher to a lower energy level

20
Q

The light given off by a hydrogen lamp is? ♾️

A

An atomic emission spectrum

21
Q

How are the energy and wavelength of light related? ⬆️🌟⬇️〰️

A

Higher energy means lower wavelength

22
Q

Which color of visible light has the longest wavelength?

A

Red

23
Q

When an electron moves from a lower to a higher energy level, the electron? 🌟

A

Absorbs a specific amount of energy

24
Q

How does the energy of an electron change when the electron moves closer to the nucleus?

A

Decreases

25
Q

In the Bohr model of the atom, an electron in an orbit has a fixed

A

Energy

26
Q

In the Bohr model of the atom where are the electrons located?

A

The electrons move in levels around the nucleus

27
Q

A continuous spectrum is…〰️☢️

A

All wavelengths of electromagnetic radiation

28
Q

An emission spectrum is… 📈🌞

A

Diagram that shows the specific emission of light by an atom

29
Q

Ground state is the…

A

Lowest energy state of an atom

30
Q

Excited state is?

A

A higher energy than it had in its ground state

31
Q

Each line in the hydrogen emission spectrum represents the 〰️🌞

A

Wavelength energy and the frequency of light emitted

32
Q

To explain the lines of an emission spectrum, scientists suggested that
➖H🌟

A

The electron of the hydrogen atom exists in energy levels

33
Q

When electricity flows through the hydrogen tube, the electron 🌟⬆️

A

Absorbs energy and jumps to a higher energy level

34
Q

The lines in the emission spectra are created when ⬇️🏥

A

Electrons fall to lower energy levels and emit EMR

35
Q

The electron emits a

A

Photon of specific wavelength energy and frequency

36
Q

Electron of the hydrogen atom emits only specific frequencies of light

A

Because the electron exists in very specific energy states

37
Q

The energy of the photon being emitted and the energy of the energy levels is 🌟🟰🌟

A

Equal to the difference in energy between the two levels

38
Q

What is the difference between an atom’s ground state and an excited state?

A

Ground-lowest energy level; excited-higher energy level

39
Q

What is the relationship between the energy of an electron and the distance from the nucleus?

A

Closer to the nucleus lower the energy

40
Q

What is a photon?

A

A massless particle which contains a quantum of energy

41
Q

Why do the lines in the hydrogen emission spectrum have a specific wavelength? 🌞➡️〰️

A

They represent light emitted at specific wavelength

Chem (9 decks)

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