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Flashcards in Atomic Structure And Electrons Deck (21):
1

Who was the first person to suggest the idea of atoms, in the 4th century B.C.

Democritus

2

The nucleus of the atom

Is positively charged and has a high density

3

The number of neutrons in the nucleus can be calculated by ...

Subtracting the number of protons from the mass number

4

Isotopes of the same element have different

Number of neutrons

5

The number 84 in the name krypton-84 represents

The mass number

6

Sub atomic particle of neutron is a ..

Hadron

7

Who discovered the nucleus

Rutherford

8

The particles that hold quarks together are called

Gluons

9

The electrons mass is _____ the mass of a proton

Less than

10

In thompsons "plum pudding model" of the atom...

The positive charge is diffused with negatively charged particles distributed throughout

11

Which radiation has the shortest wavelength

X-Ray

12

Which light has the shortest wavelength

Violet

13

The most abundant isotope of hydrogen is

Protium

14

List the six flavors of quarks

Up
Charm
Down
Top or truth
Strange
Bottom or beauty

15

What do you call a "particle" of light

Photon

16

What is the equation for energy

E=hf

H: planks constant (6.626x10^-34)

F=frequency

17

Equation for frequency

F=c/(wavelength)

18

Equation for wavelength

H/(m)(v)

M=length in kg
V=velocity
H=planks constant 6.676x10^-34js

19

Frequency units

Hz
S-1

20

Unit of energy

Jewels

21

What is the antiparticle of the electron

Positron