Lecture One. Flashcards

1
Q

Second most electronegative element

A

OXYGEN

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2
Q

Diatomic Molecules

A

hydrogen , oxygen, nitrogen and HALOGENS

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3
Q

Atomic Radius

A

Increase Down and to the Left

distance from the center of the nucleus to the outermost electron

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4
Q

Ionization Energy

A

Increase Up and to the Right

The energy needed to detach and electron from an atom

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5
Q

Electronegativity

A

Increase UP and to the RIGHT

Tendency of an atom to attract electrons shared in a covalent bond

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6
Q

Electron Affinity

A

Increase UP and Right

willingness of an atom to accept an additional electron

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7
Q

Isoelectronic Ions

same number of electrons but different elemental identities

A

O2- , F- , Ne , Na+ , Mg2+

ranked from largest to smallest in size.

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8
Q

Heisenberg Uncertainty Principle

A

uncertainty in the position of a particle and its momentum. the more we know about one the less we know about the other, Vice Versa.

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9
Q

Chromium (Cr) E-Configuration

A

[Ar] 4s1 3d5

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10
Q

Copper (Cu) E-Configuration

A

[Ar] 4s1 3d10

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11
Q

Paramagnetic Elements

A

have unpaired electrons

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12
Q

amount of energy in a photon

A

(Delta)E = (6.6x10-34)(frequency)

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13
Q

Work Function

A

The minimum amount of energy required to free a electron on metal

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14
Q

Electrons Kinetic Energy

A

K.E= hf(energy in)- Work function ( energy out)

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15
Q

Bond Length

A

the distance between the nuclei of two atoms in a bond when they are at their lowest energy levels.

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16
Q

which atoms hydrogen bond with with hydrogen?

A

Oxygen, Nitrogen and Flourine

17
Q

what are the weakest intermolecular forces ?

A

London Dispersion Forces

18
Q

SI Units: Mass, Length, Time , Temperature , Amount of substance.

A

Kilograms, Meters, Seconds, Kelvin, Moles

19
Q

Mega-

20
Q

Kilo-

21
Q

Deci-

22
Q

Centi-

23
Q

Milli-

24
Q

Micro-

25
Nano-
10^-9
26
Pico-
10^-12
27
Femto
10^-15
28
Avagadro's number
6.022 x 10^23 = 1 gram
29
elementary reaction
a reaction that occurs in a single step
30
reaction orders
show how changes in the reactant concentrations influence the reaction rate
31
The order of the overall reaction is..
the sum of the exponents in the rate law.
32
Radioactive Decay
atoms that spontaneously break apart
33
Half-Life and its 4 variables
length of time necessary for one half of a given amount of substance to decay. Variables: Initial amount of substance, the final amount of substance, the length of half-lives, the number of half lives
34
alpha-decay
move left on the periodic table 2 spaces and subtract 4 from the mass #
35
beta-decay
move right one time on the periodic table.