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Periodic Trends
Electron Configuration
Paired and Valence Electrons
Subatomic Particles
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100
Understanding the Atomic radius trend, which element has a  smaller atomic radius Calcium or Zinc

What is Zinc

100

The following are electron configurations is for which element  1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2

What is germanium 

100

How many unpaired electrons does Argon have 

what is 0
100
Tell me number of protons, neutrons and electrons in neutral atom of Tin, with mass of 119

P=50

E=50

N=69

100

Which metals are highly reactive?

What is Alkali Metals 

200

Which metal is more reactive, Silver or Strontium 

What is Strontium 

200
What is the electron configuration for Sulfur

1s2 2s2 2p6 3s2 3p4

200

How many valence electrons does Phosphorus have

What is 5

200

If an atom of Copper has a charge of +4 how many electrons and protons does it have 

P=29

E=25

200

Which nonmetals are highly unreactive?

What are noble gases?

300

Which non metal is more reactive, Chlorine or Selenium 

What is Chlorine

300

What is the electron configuration for Mercury (use the short hand) 

[Xe]6s2 4f14 5d10

300

How many unpaired electrons does Cobalt have 

what is 4

300

If Bromine has a charge of -1 how many protons and electrons  

P=35

E=36

300

If I have a -3 charge on an atom do I have more electrons then protons or more protons then electrons?

What is more electrons then protons 

400

Why does the atomic radius of atoms increase going right to left

What is there are more protons on the right most atoms that pull the electrons closer to the nucleus then on the left side, so the atoms on the left have a large electron configuration.

400

What is the element for [Kr]5s2 4d10 5p1

What is indium 
400

How many valence electrons does Cesium have 

What is 1
400

Why can we not change the number of protons?

Because it defines the element 

400

Mercury- give the symbol, atomic number, protons, neutrons and electrons when the mass is 201 and it has a +5 charge. 

Hg

A#=80

P=80

N=121

E=75

500

Why does the atomic radius increase doing down the periodic table 

Because there are more energy levels as you go down, so the radius increase 

500

What is the electron configuration for Tantalum (Do not use short hand) 

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d2

500

How many valence electrons does Florine have 

what is 7

500

What is the difference between O-16 and O-18. What subatomic particle changes  

The mass and neutrons 

500

Write electron configuration for Os, tell up-paired electrons and valence electrons

[xe]6s2 4f14 5d5

2 valence 

5 unpaired electrons