Question 21
Question 21 of 40
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Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
2. Atoms, elements and co...
2.4. Ion and ionic bonds

Describe and explain in terms of structure and bonding the properties of ionic compounds: (a) high melting points and boiling points (b) good electrical conductivity when aqueous or molten and poor when solid

8. The Periodic Table
8.2. Group I properties

Describe the Group I alkali metals, lithium, sodium and potassium, as relatively soft metals with general trends down the group, limited to: (a) decreasing melting point (b) increasing density (c) increasing reactivity

2. Atoms, elements and co...
2.7. Metallic bonding

Explain in terms of structure and bonding the properties of metals: (a) good electrical conductivity (b) malleability and ductility