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13 questions
This could be the dot diagram of
Mg
Cl
C
O
This is a correct dot diagram for nitrogen (N)
true
false
This is a correct dot diagram for neon (Ne)
true
false
Which of these is incorrect?
What are valence electrons?
The total number of electrons in an atom
The number of electrons in the outermost shell
The number of electrons in the second shell
The number of protons in the outermost shell
What are the elements (Be, Mg, Ca,...) in Group 2 called?
Alkali metals
Alkaline earth metals
Halogens
Noble Gases
Elements that have atoms with full valence shells in the ground state are in
Group 1
Group 2
Group 17
Group 18
This could be the dot diagram of an element with the atomic number
8
31
19
36
Which of these is correct?
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