SSCE VCE Chemistry Chemical Elements: Refer to the periodic table in t

Question

Refer to the periodic table in the data sheet when answering this question. 
Identify each of the following elements on the basis of the properties listed in the table below. Write its chemical symbol in the appropriate box in the third column.

Property						Chemical symbol of the element

i. The element which forms an ion with electron configuration of 1s²2s²2p⁶ and a charge of +2.

ii. The third member of the actinides.

iii. A period 3 element which forms an ionic oxide that reacts with both acids and bases.

iv. In the ground state, atoms of this element have electrons in 2 shells and the first ionisation energies are 0.80, 2.43, 3.66 and 25.02 MJ mol⁻¹.

v. An element that is more electronegative than chlorine and its atoms have an outer-shell configuration of 5s²4p.

vi. An element which is more metallic than germanium (Z = 32), has a higher first ionisation energy than bismuth (Z = 83) and atoms with an outer-shell configuration of 5s²4p³.

Refer to the periodic table in the data sheet when answering this question - VCE - SSCE Chemistry - Question 1 - 2007 - Paper 1

Worked Solution & Example Answer:Refer to the periodic table in the data sheet when answering this question - VCE - SSCE Chemistry - Question 1 - 2007 - Paper 1

The element which forms an ion with electron configuration of 1s²2s²2p⁶ and a charge of +2.

The third member of the actinides.

A period 3 element which forms an ionic oxide that reacts with both acids and bases.

In the ground state, atoms of this element have electrons in 2 shells and the first ionisation energies are 0.80, 2.43, 3.66 and 25.02 MJ mol⁻¹.

An element that is more electronegative than chlorine and its atoms have an outer-shell configuration of 5s²4p.

An element which is more metallic than germanium (Z = 32), has a higher first ionisation energy than bismuth (Z = 83) and atoms with an outer-shell configuration of 5s²4p³.

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