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 el... 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 in the given list is Fluorine (F). This conclusion is based on the periodic trend where electronegativity increases across a period and decreases down a group.
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 is Oxygen (O). It commonly forms a -2 charged ion (O²⁻) in order to achieve a stable electron configuration similar to Neon.
Step 3
c. an element that forms an amphoteric oxide
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Answer
The element is Aluminum (Al). Aluminum oxide (Al₂O₃) can react both as an acid and a base, demonstrating amphoteric properties.
Step 4
d. an element X that forms oxides with the formula XO and XO₂
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Answer
The element is Sulfur (S). Sulfur forms oxides such as Sulfur dioxide (SO₂) and Sulfur monoxide (SO).
Step 5
e. an element that is found in proteins but not in carbohydrates
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Answer
The element is Nitrogen (N). Nitrogen is a key component of amino acids, which are the building blocks of proteins, but it is not found in the structure of carbohydrates.
