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irina [24]
4 years ago
11

Question 31 Unsaved

Physics
1 answer:
Bumek [7]4 years ago
7 0
A) elements in the same group usually have similar chemical properties
B) This is because their atoms have the same number of electrons in the highest occupied energy shells
C) Lithium, sodium, potassium in group 1 elements are reactive metals called the alkali metals
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