Question

name: _ period/block: _ dr. d’tavion murphy, an astronomer, is observing a star. while observing the star, dr. murphy observed this atomic spectrum: wavelength: 400 nm energy: 3 ev uv 500 nm 2.5 ev blue 600 nm 2 ev green 700 nm 1.7 ev red 800 nm 1.5 ev infrared 1. what element(s) are present in the star dr. murphy is observing? claim: (your answer to the question) • the element(s) in the atomic spectrum are ... evidence: what evidence did you use to figure out which elements were present? reasoning: how did you use this evidence to identify the element(s)? • i used this evidence because _. 2. for the star dr. murphy is observing, draw a neutral atom for each element. did you show the location of protons, neutrons, and electrons? use the atom builder to help you draw your atom(s)! scan the qr code or copy the link below: https://phet.colorado.edu/sims/html/build - an - atom/latest/build - an - atom_all.html atom 1 atom 2 (if needed) _ p _ n _ p _ n

Explanation:

Step1: Identify elements from spectrum

Each element has a unique atomic - spectrum. We need to compare the observed spectrum with known spectral lines of elements. However, since the actual spectral lines are not provided in a way that we can directly match (e.g., no specific line - positions or intensities compared to a reference table), we assume we have access to a spectral database. If the spectral lines match those of hydrogen (which is very common in stars), we can claim hydrogen is present. If there are other lines that match elements like helium, calcium, etc., we can identify them as well. But without more detailed spectral data, we can't precisely identify elements.

Step2: Draw neutral atoms

If we assume hydrogen is present (a common first - step assumption for stars), a neutral hydrogen atom has 1 proton in the nucleus and 1 electron in the first energy level. There are 0 neutrons in the most common isotope of hydrogen (protium). If we identify other elements, for example, helium, a neutral helium atom has 2 protons and 2 neutrons in the nucleus and 2 electrons in the first energy level.

Answer:

1. Without detailed spectral data for comparison, we cannot precisely identify the elements. But hydrogen is a common element in stars and may be present.
2. If hydrogen is present:

• Atom 1: Protons (P): 1, Neutrons (N): 0. Electrons would be in the first energy level outside the nucleus.
• If other elements are identified, for example, helium: Atom 2 (if needed): Protons (P): 2, Neutrons (N): 2. Electrons would be in the first energy level outside the nucleus.