Atomic Structure
Atomic Calculations
Electrons
Periodic Table
Trends
100

Which scientist discovered that electrons where separated into energy levels?

Bohr

100

The atomic number tells us the number of ________. 

Protons

100

What is the charge of an electron?

Negative (-1)

100

What are the columns (up and down) of the periodic table called?

Groups

100

Which atom has more protons? 

Se or Br

Br

200

Which scientist organized the periodic table by size?

Mendelev
200

Protons 12

Neutrons 14

Electrons 10

What is the Atomic Mass?

26 amu

200

How many electrons can the n=1 shell hold?

2

200

What are the rows (left and right) of the periodic table called?

Periods

200

Which element has the greatest Atomic Radius?

Fe, Be, Si

Be

300

Where are electrons found?

The shells/ energy levels

300

An atom has 

27 protons

+3 charge

How many electrons does it have?

24

300

How many electrons fit into the 2nd shell?

8
300

Which period is Boron (B) in?

Period 2

300

Which atom has the greatest electro negativity?

Al , Cl, Na 

Cl

400

Which subatomic particles are in the nucleus?

Protons and Neutrons

400

Protons 12

Neutrons 14

Electrons 10

What is the charge?

+2

400

How many energy levels does CS Cesium have?

6

400

How many energy levels does Calcium (Ca) have?

4

400

Which atom has the lowest electron affinity?

Sr, Be, Ra

Ra

500

Which scientist discovered protons using gold foil?

Rutherford

500

An atom has 

5 protons

-2 charge

How many electrons does it have?

7

500

How many Valence Electrons does Sulfur (S) have?

6

500

Which metalloid is used in computers?

Silicon (Si)

500

List the elements from least to greatest reactivity: 

Sulfur (S), Oxygen (O), Fluorine (F)

S, O, F
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