Test - Atomic Structure Flashcards
1
Q
- The atomic number of magnesium is 12. Therefore its nucleus must contain…
A
12 Protons and no Electrons (NB 7)
2
Q
- An unstable nucleus results from too many or too few…
A
Neutrons (NB 7)
3
Q
- Which of the following elements would be the least reactive?
A
Silicon (NB 7)
4
Q
- In each period, how does the number of electrons in each kind of atom change from left to right between Groups 1 and 2? Explain how you know.
A
Atoms electrons increase by one because the atomic number increases by one (NB 7)
5
Q
- a. The element is in the same family as Br, but has fewer protons than Mg. It must be…
A
Fluorine (NB 7)
