Scelta multipla
Which of the following is the correct chemical formula for the hydronium ion?
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3. Chemical Reactions
Polyatomic Ions
Scelta multipla
Why might arsenic be able to substitute for phosphorus in polyatomic ions?
A
Arsenic forms only monatomic ions, unlike phosphorus.
B
Arsenic and phosphorus have similar atomic radii and chemical properties.
C
Arsenic has a much higher electronegativity than phosphorus.
D
Arsenic is a transition metal, while phosphorus is a nonmetal.
Guida verificata passo dopo passo1
Step 1: Understand the concept of substitution in polyatomic ions. Substitution occurs when one element can replace another in a compound without significantly altering the compound's structure or properties.
Step 2: Compare the positions of arsenic and phosphorus in the periodic table. Both elements are in the same group (Group 15), which means they have similar valence electron configurations.
Step 3: Recognize that similar valence electron configurations lead to similar chemical properties, such as bonding behavior and oxidation states.
Step 4: Consider atomic radii. Arsenic and phosphorus have comparable atomic sizes, which allows arsenic to fit into the same structural positions in polyatomic ions where phosphorus normally resides.
Step 5: Conclude that because arsenic and phosphorus share similar chemical properties and atomic radii, arsenic can substitute for phosphorus in polyatomic ions, maintaining the ion's overall structure and charge.
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