This question tests your ability to synthesize information from notes to accomplish a specific goal. You must find the exact match between data points.
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Question banks: October 2026 English question bank
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Start 1-day free trial →This Digital SAT synthesis question asks you to match notes data to a student's stated goal without adding irrelevant facts. Here is how to spot the correct choice and dodge the trap answers.
📚 The Rule: Understanding Domain 3
How to Attack These Questions:
- Step 1: Read the student's goal statement carefully. Underline the exact requirement: 'provide an example of an element with an emission spectrum that includes a wavelength in the violet portion.'
- Step 2: Scan the notes. Find which element has a wavelength that falls within the 380-450 nm range (violet portion). Titanium has 430.5 nm. Krypton has 583.2 nm, which is outside that range.
- Step 3: Eliminate any choice that mentions krypton's wavelength as violet (A, C) or that states a fact without naming an element (B). The correct choice must name titanium and correctly link its 430.5 nm wavelength to the violet range.
Passage Context: An emission spectrum is the unique set of colors (wavelengths) of light given off by a chemical element when its electrons change energy levels. A nanometer (nm) is a unit of length used to measure light waves; one nanometer is one billionth of a meter.
🎯 The Practice Question
• When the electrons of a chemical element change energy states, certain wavelengths of light are released.
• This unique collection of wavelengths is known as the emission spectrum of the element.
• Titanium's emission spectrum includes the 430.5 nanometer (nm) wavelength.
• Krypton's emission spectrum includes the 583.2 nm wavelength.
• The violet portion of the visible spectrum is made up of light with wavelengths of 380-450 nm.
The student wants to provide an example of an element with an emission spectrum that includes a wavelength in the violet portion of the visible spectrum. Which choice most effectively uses relevant information from the notes to accomplish this goal?
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✅ The Correct Answer
Choice D correctly fulfills the student's goal. The goal requires naming an element and showing its emission spectrum includes a violet wavelength. The notes state titanium's spectrum includes 430.5 nm. The notes also define violet light as 380-450 nm. 430.5 nm falls within that range. Choice D synthesizes these two facts into one clear, accurate statement that provides the requested example.
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🚫 Why the Others Violate the Rule
Choice A: This choice violates the rule because it incorrectly states that krypton's 583.2 nm wavelength is in the violet portion. The notes define violet as 380-450 nm, and 583.2 nm is outside that range.
🩺 Diagnosis: Study careful data matching; you missed that 583.2 nm is not within the 380-450 nm range.
Choice B: This choice violates the rule because it states a fact (430.5 nm is violet) but fails to provide an example of an element, which is the core requirement of the prompt.
🩺 Diagnosis: Study prompt requirements; you provided a true fact but did not fulfill the specific request for an 'example of an element.'
Choice C: This choice violates the rule because it incorrectly claims both elements have violet wavelengths. Only titanium's 430.5 nm is violet; krypton's 583.2 nm is not, according to the notes.
🩺 Diagnosis: Study precision; you included irrelevant and incorrect information about krypton.
⚠️ Anatomy of the Trap
The Global Trap: The global trap for synthesis questions is including true information from the notes that does not directly answer the specific question asked. Test-makers include tempting facts that are accurate but irrelevant to the goal.
In this exact question: The specific trap here is the krypton data point (583.2 nm). It's a true fact from the notes, but it does not satisfy the 'violet portion' requirement, making choices A and C incorrect.
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Frequently Asked Questions
What is an example of an element with an emission spectrum wavelength in the violet portion?
Titanium has an emission spectrum wavelength of 430.5 nm, which is within the violet portion (380-450 nm).
Why is Choice D correct for the March 2026 Digital SAT synthesis question?
Choice D correctly states that titanium's emission spectrum includes the 430.5 nm wavelength, which is in the violet portion (380-450 nm), fulfilling the student's goal.
What is the violet portion of the visible spectrum in nanometers?
The violet portion of the visible spectrum is 380-450 nm.
What is the wavelength of krypton's emission spectrum?
Krypton's emission spectrum includes the 583.2 nm wavelength.