What elements are in the mystery star #15? What elements are in the mystery star #15?HeliumHydrogenSodiumLithium#15lithium and heliumO hydrogen and sodiumhydrogen and lithiumsodium and lithium

The spectra of elements given are,

Answered: What elements are in the mystery star…

Introductory Chemistry: A Foundation

8th Edition

ISBN:9781285199030

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter4: Chemical Foundations: Elements, Atoms, And Ions

Section: Chapter Questions

Problem 100AP

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Similar questions

The element gallium, used in gallium arsenide semiconductors, has an atomic weight of 69.72 amu. There are only two isotopes of gallium, Ga with a mass of 6.9257 amu and Ga with a mass of 70.9249 amu. What are the isotopic abundances of gallium? Gallium melts just above room temperature
The element lithium (Li) has an atomic mass of 6.94 amu and has two naturally occurring istopic forms. Based on this information, indicate whether each of the following statements is true or false? a. All Li atoms have a mass of 6.94 amu. b. Some Li atoms have a mass of 6.94 amu. c. Some Li atoms have a mass of less than 6.94 amu. d. Some Li atoms have a mass of greater than 6.94 amu.
Xenon An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s mass number?
Give the atomic number (Z) and the mass number (A) for each of the following: a. a carbon atom with 8 neutrons b. an aluminum atom with 14 neutrons c. an argon atom with 20 neutrons d. a copper atom with 36 neutrons
The isotope of an unknown element, X, has a mass number of 79. The most stable ion of this isotope has 36 electrons and has a 2 charge. Which of the following statements is(are) true? For the false statements, correct them. a. This ion has more electrons than protons in the nucleus. b. The isotope of X contains 38 protons. c. The isotope of X contains 41 neutrons. d. The identity of X is strontium, Sr.
A hypothetical element X is found to have an atomic weight of 37.45 amu. Element X has only two isotopes, X-37 and X-38. The X-37 isotope has a fractional abundance of 0.7721 and an isotopic mass of 37.24. What is the isotopic mass of the other isotope?
Scientists are trying to synthesize elements with more than 114 protons. State the expected atomic number of (a) the newest inert gas. (b) the new element with properties similar to those of the alkaline earth metals. (c) the new element that will behave like the halogens. (d) the new (nontransition) metal whose ion will have a +2 charge. (e) the new element that will start period 8.
Calculate the atomic mass of each of the following elements using the given data for the percentage abundance and mass of each isotope. a. Lithium: 7.42% 6Li (6.01 amu) and 92.58% 7Li (7.02 amu) b. Magnesium: 78.99% 24Mg (23.99 amu), 10.00% 25Mg (24.99 amu), and 11.01% 26Mg (25.98 amu)
The following table presents the abundances and masses of the isotopes of zinc. What is the atomic weight of zinc?

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What elements are in the mystery star #15? Helium Hydrogen Sodium Lithium O lithium and helium O hydrogen and sodium O hydrogen and lithium O sodium and lithium