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Chemistry
9th -
12thgrade
3.2.1.2 Physical properties of Period 3 elements
8 questions
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- 1. Multiple Choice
The diagram shows how a property of Period 3 elements varies across the period.
What is the property?
Atomic radius
Electronegativity
First ionisation energy
Melting point
- 2. Multiple Choice
Which element has the highest first ionisation energy?
Aluminium
Phosphorus
Silicon
Sulfur
- 3. Multiple Choice
Which of these Period 3 elements has the highest melting point?
Aluminium
Phosphorus
Sodium
Sulfur
- 4. Multiple Choice
Which is the correct order of melting points of these Period 3 elements?
phosphorus > sulfur > chlorine > argon
argon > chlorine > phosphorus > sulfur
sulfur > phosphorus > chlorine > argon
chlorine > phosphorus > sulfur > argon
- 5. Multiple Choice
Which of the following is a correct statement about the trend in atomic radius across Period 3 of the Periodic Table?
radius increases because the atoms have more electrons
radius decreases because nuclear charge increases
radius increases because shielding (screening) increases
radius decreases because shielding (screening) decreases
- 6. Multiple Choice
Which elements are shown in increasing order of the stated property?
Atomic radius: phosphorus, sulfur, chlorine.
First ionisation energy: sodium, magnesium, aluminium.
Electronegativity: sulfur, phosphorus, silicon.
Melting point: argon, chlorine, sulfur.
- 7. Multiple Choice
Which of these elements has the highest second ionisation energy?
Na
Mg
Ne
Ar
- 8. Multiple Choice
Which one of the following statements is correct?
The first ionisation energies of the elements in Period 3 show a general decrease from sodium to chlorine.
The electronegativities of Group 2 elements decrease from magnesium to barium.
The strength of the intermolecular forces increases from hydrogen fluoride to hydrogen chloride.
The ability of a halide ion to act as a reducing agent decreases from fluoride to iodide.
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