WorksheetsSearch for Habitable Planets Mid-Units Assessment Review
Total questions: 20
Worksheet time: 38mins
Match the following atoms with their valence electron amount:
Strontium, Sr
2
Chlorine, Cl
7
Rubidium, Rb
1
Krypton, Kr
8
Sulfur, S
6
An element has an atomic number of 9 and a mass of 19 amu. What is the number of protons this element has?
9
19
10
28
An element has an atomic number of 9 and a mass of 19 amu. What is the number of electrons this element has?
9
19
10
28
An element has an atomic number of 9 and a mass of 19 amu. What is the number of neutrons this element has?
9
19
10
28
N₂O₅
(a)
N₂O
(a)
I₂O₇
(a)
Cl or Al?
N or C?
The atom with the largest atomic radius in Group 8A is -
Which element has a larger radius?
Oxygen (O)
Sulfur (S)
Tellurium (Te)
Polonium (Po)
What is the correct Lewis Dot Structure for ammonia NH3
What is the correct Lewis dot structure for SiCl4?
Which picture is the correct Lewis Dot Structure for HCl?
