From the following list of elements
Li Be B C N O F
Na Mg Al Si P S Cl
give the symbol or name for
a - VCE - SSCE Chemistry - Question 1 - 2005 - Paper 1
Question 1
From the following list of elements
Li Be B C N O F
Na Mg Al Si P S Cl
give the symbol or name for
a. the most electronegative element ____________________
b. the ... show full transcript
Worked Solution & Example Answer:From the following list of elements
Li Be B C N O F
Na Mg Al Si P S Cl
give the symbol or name for
a - VCE - SSCE Chemistry - Question 1 - 2005 - Paper 1
Step 1
a. the most electronegative element
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Answer
The most electronegative element from the given list is Fluorine (F), which has the highest electronegativity according to the Pauling scale.
Step 2
b. the element that commonly forms an ion which has an electron configuration of 1s²2s²2p⁶ and a –2 charge
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Answer
The element that commonly forms an ion with the electron configuration of 1s²2s²2p⁶ and a –2 charge is Oxygen (O). The ion it forms is the oxide ion (O²⁻).
Step 3
c. an element that forms an amphoteric oxide
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Answer
Aluminum (Al) is an element in the list that forms amphoteric oxides, specifically aluminum oxide (Al₂O₃), which can react with both acids and bases.
Step 4
d. an element X that forms oxides with the formula XO and XO₂
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Answer
Carbon (C) is an example of an element that can form oxides such as carbon monoxide (CO) with the formula XO and carbon dioxide (CO₂) with the formula XO₂.
Step 5
e. an element that is found in proteins but not in carbohydrates
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Answer
Nitrogen (N) is an element that is found in proteins as a component of amino acids but is not present in carbohydrates.
