Periodic Table Practice Questions
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Which is the most unreactive group of the periodic table and why? Group 0 / group 8 The Noble Gases because they have a full outer shell of electrons and are therefore stable. Name 3 halogens Chlorine, Fluorine and Iodine (also Astatine and bromine). How many electrons do halogens have on their outer shell? 7 What charge do ions of group 6 have? 2- because they have to gain 2 electrons to have a full outer shell. How many electrons does Cl have on its outer shell? 7 What is the mass of 0.25 moles of sulpher ions? 0.25 x 32 = 8g How many moles is 6g of Magnesium? 6/24 = 0.25 mols How many protons, neutrons and electrons in a Li atom? Protons=3 Neutrons=4 Electrons=3

Other Notes in this Category

1. Atomic Structure
2. Bonding and Elements
3. Fractional Distillation
4. Periodic Table Practice Questions
5. Properties of covalent, ionic, giant and molecular compounds

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