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11 questions
Which one is classified as a symbol?
Lm
Cb
Na
Po
What does the atomic number tell you?
How much the element weighs
The number of protons and neutrons in the nucleus
The number of electrons
The number of valence electrons
What is the correct atomic mass for radium?
435.01
239.053
10.81
226.025
How many valence electrons are in halogens
1
8
2
4
Which answer is the best to describe a metalloid?
Shiny and a good conductor
Dull and an insulator
Has the same appearance as metals and non-metals
Dull and malleable
What is the period of boron?
2
4
1
5
What family is tellurium in?
metals
metalloids
non-metals
halogens
If fluorine is a halogen then how many valence electrons does it have?
8
2
9
7
What are the valence electrons for alkaline earth metals?
1
2
3
4
Which element is dull and is not a good conductor?
silicon
boron
arsenic
nitrogen
What is the chemical property for group 13?
transition metals
alkaline earth metals
metalloids
alkaline metals
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