D. List down 5 noble gases E. List down eight transition metals F. Aside from the noble gases, list down eight non-metals.

Q: 3) What defines the atomic number of an element? a. The number of shells b. The number of neutrons…

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Q: 32. An ion of a hypothetical element (let is call it Sycamorium, Sy) can be denoted by the notation…

A: The species neutron number will be equivalent to the difference linking the species mass number and…

Q: Atomic Information Sample Number of Protons Number of Neutrons 44 36 46 2. 36 36 48 4. 36 50 Which…

A: An element is identified by its atomic number. Atomic number is the number of proton present in that…

Q: To the right is a representation of 50 atoms of a fictitious element called westmontium (Wt). The…

A: A mass spectrum is an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical…

Q: tor the elumantal 198 Re 75 Symbol There are protons and neutrons

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Q: 11.Label the parts of the helium entry from the periodic table. 2 Не 4.003 12. What does the atomic…

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Q: 17. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Which statement is correct? A.Electrons, protons, and neutrons have about the same mass.…

A: This question is base on the masses of electrons ,protons and neutrons.

Q: 4. Define an atom – 5. Label each of the parts of the atom on the diagram to the right. 6. Fill in…

A: An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid,…

Q: Could you please fill in the chart?

A: For a neutral atom, number of protons = number of electrons =  atomic number (Z) mass number(A) =…

Q: 14. The table shows the number of subatomic particles in Atom X and Atom Z. Atom X Z # of protons #…

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Q: What is the term for the elements that belong to Groups IIIB-IIB (Groups 3-12)?

A: In the modern periodic table we have eighteen groups. These groups are classified to four blocks;…

Q: . Dalton's Atomic Theory included all of the ideas listed below except   a. All atoms of a given…

A: Ans-32  The postulate that does not give my dalton atomic theory is - An atom is composed of very…

Q: Which of the following statements is/are true? For the false statements, correct them. a. All…

A: In a nucleus, neutrons are neutrally charged whereas protons are positively charged

Q: Atoms Atom Protons Neutrons Electrons 1 10 18 2 10 10 19 11 8 Which two are isotopes of one another?…

A: Isotopes :  Isotopes are atoms of the same element that have same atomic number but different mass…

Q: Complete the following chart, in order from left to right Ion Mass Number Protons Neutrons Electrons…

A: Third option c. 4He, 2

Q: An element X is composed of the isotopes X-14 and X-15 (see data table for mass and percent…

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Q: Complete the following chart, in order from left to right Mass Number Protons Neutrons Electrons Ion…

A: It has number of protons = 2, which is also equal to its atomic number. So, this is a Helium (He)…

Q: 6. Use a series of diagrams and a few point-form notes to create a flow chart that summarizes the…

A: Answer - Atomic theory has evolved since ancient times. The hypothesis of Greek scholars has become…

Q: If an element has a mass number of 34, and 18 neutrons and 18 electrons...what is the symbol, number…

A: The number of protons in an element is known as the atomic number of the element. The number of…

Q: 1. Predict the mass and abundance of Mg-25 with the information given. Isotope Mg-24 Mg-25 Mass…

A: Mass of Mg-24 = 23.9850 amuAbundance of Mg-24 = 78.99%Mass of Mg-26 = 25.9826 amuAbundance of Mg-26…

Q: 2. Which of the following best describes an element? a. A neutral substance consisting of a cation…

A: Element is a substance which consists only of atoms having same atomic number and hence same…

Q: 5. Classify each of the following elements as a (an) alkali metal, alkaline earth metal, transition…

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Q: These isotopes 2. Sulfur exists in nature as three isotopes. If the atomic have isotopic masses…

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Q: 11. When determining an element's identity, what is the MOST important subatomic particle to…

A: Given, When determining an element identity what is the most important subatomic particle to examine…

Q: How does matter contrast with elements, atoms, and isotopes? Explain step by step how matter…

A: The given question asks to explain three differences, first between matter and elements, second…

Q: 2.     The most common isotope of carbon has a mass of 12. Carbon has an atomic number of 6. A.…

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Q: Iron Boron Sulfur Silicon Aluminum Element Atomic Notation 54 Fe 26 Sub 27 134 Par #p #e #n #p #e #n…

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Q: Hint: The symbol for one of the stable isotopes of sulfur can be written: 34S. How many protons,…

A: As we know, in case of neutral atom  # of protons = # of electrons= atomic number (Z) # of protons +…

Q: 7. How many neutrons are there in carbon-14 A. 6 B. 8 C. 14 D. 20   8. How many protons are…

A: Calculate no. of neutron in C-14 & number of proton in 8 neutron and 10 electron ?

Q: Which of the following are true about S2-? Select all O a. Contains 14 electrons O b. Contains 14…

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Q: Which of the following is the least reactive group of elements? a. Alkali metals…

A: The least reactive group of elements has to be identified