Mrs. Smith showed her class three elements and described their properties. Properties of Elements Element 1 Good conductor of electricity and heat Element 2 Semiconductor of electricity and heat Element 3 Very poor conductor of electricity and heat Based on the properties of elements 1, 2, and 3, in which section of the periodic table would you find them?

Q: You have discovered a new element - Bluehenium (Bl).  It has two naturally occurring isotopes 68Bl…

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Q: A. Explain how you would determine the number of neutrons in a chlorine atom that has a mass number…

A: Given, A chlorine atom has a mass number of 37 Another chlorine atom has a mass number of 35…

Q: a. The atom can be broken down into smaller parts. What are the smaller parts? b. How are atoms of…

A: Since the question being asked has more than 3 subparts, we’ll answer the first 3. Please repost the…

Q: 58. Which elements are alkaline earth metals?(a) rubidium(b) tungsten(c) magnesium(d) cesium(e)…

A: The six chemical elements which are present in the second group of the periodic table are known as…

Q: Which of the following statements is incorrect? A. Protons are positively charged. B.) Protons…

A: Atom is made up of 3 particles 1) Proton 2) Neutron  3) electron

Q: Chlorine is a halogen (Table 2.3). Locate this element in the periodic table.(a) What is its…

A: Chlorine is a halogen. Chlorine is the second halogen in the periodic table. It lies before the…

Q: 17) You have 19 protons, 19 electrons, and 39 neutrons, which element do you have? How do you know?

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Q: Sulfur has four isotopes and has an atomic mass of 32.066 amu. The four isotopes have the following…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following pairs of elements do you expect to be most similar? O nitrogen and oxygen…

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Q: Q7. Which element is a row 4 noble gas?(a) Ne (b) Br (c) Zr (d) Kr

A: Noble gases are also known as inert gases. These include He, Ne, Ar, Kr, Xe and Rn.

Q: The three most common isotopes of tin have mass numbers 116, 118, and 120. For each isotope, give…

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Q: 57. Which elements are alkaline earth metals?(a) sodium(b) aluminum(c) calcium(d) barium(e) lithium

A: The elements in the tabular form when arranged on the property of the increasing atomic number order…

Q: 1. A model of an atom is shown below. Carbon (C) Sodium (Na) Nucleus Boron (B) Neon (Ne) CLEAR ALL…

A: Dear student I have given answer to your question in the image format.

Q: Pls answer to all question, they are not that long.

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: Complete the following table. (Remember to use correct capitalization for the chemical symbol!)…

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Q: Suppose we have three hypothetical atomic nuclei: A, B, and C. Nucleus A has 3 protons and 4…

A: According to the question, we have three hypothetical atomic nuclei:A, B, and C. Nucleus A has 3…

Q: 1. Write the three characteristics of metals and nonmetals. Metals Nonmetals 2. List the subatomic…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: j. How is the mass number related to the number of protons, neutrons, and/or electrons? k. Potassium…

A: j) Mass no. is the sum total of no. of protons and neutrons. Mass no.=no. of protons+no. of neutrons…

Q: 69 2.47 Gallium has two naturally occurring isotopes, Ga (isotopic mass = 68.9256 amu, abundance…

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Q: Give a second property of neutrons that is similar to the properties of protons.

A: Firstly, both protons and neutrons have same mass, i.e. 1 amu.   1 atomic mass unit (amu) equals…

Q: 21. The elements in Group 7A are known by what name? A. transition metals B. halogens oli m D.…

A: Group 7A of the periodic table consists of the elements: fluorine (F), chlorine (Cl), bromine (Br),…

Q: Which of the following statements is NOT correct according to Dalton's atomic theory? O A. A sample…

A: Dalton is the name of the scientist who gave Dalton's atomic theory.

Q: Compare the elements Mg, N, O, Be with regard to the following properties: You may need to use the…

A: The elements given are Mg, O, N and Be.

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: Consider the following selected postulates of Dalton's atomic theory: (i) Each element is composed…

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Q: Which of the following could describe an element?   I II III All of them None of them

A: Matter: Matter can be defined as any component which occupies space and has mass.

Q: This group of elements is the most reactive of all the non-metals  A) rare earths B) halogens C)…

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Q: Substance C has 15 protons, 15 electrons, and 15 neutrons. Substance D has 15 protons, 15 electrons,…

A: Given: C has 15 protons, 15 electrons and 15 neutrons. And substance D has 15 protons, 15 electrons…

Q: 151 has an abundance of 48.03% and Europium-153 has an abundance of 51.97%. What is the atomic mass…

A: Calculation of average masses and abundance of isotopes.

Q: Which of the following was not postulated by Dalton? Group of answer choices A, Atoms of one element…

A: The Dalton atomic theory was the first attempt to describe the structure of an atom. According to…

Q: Elements of which of the following groups on the periodic table always occur naturally as monatomic…

A: The groups given are, A) Noble gases B) Halogens C) Chalcogens  D) Pinctogens E) Group 4 A (14)…

Q: 10. Copper has two naturally occurring isotopes, 6Cu (isotopic mass = 62.9296 amu) and 6Cu (isotopic…

A: Atoms of the same element having same atomic number but different mass number are called as…

Q: Part 1: Vocabulary Define the following terms: (from what you remember from middle school) Matter:…

A: Answer for part 1 Matter It is the substance of which any physical object consist. Atom It is the…

Q: 2. A naturally occurring sample of argon contains 2696 atoms of Ar, 504 atoms of Ar, and 7.968 X 10…

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Q: A certain element has a density of 7.19 g cm3 . A cube of this element with a side of 2.00 cm…

A: Given,Density of unknown element = 7.19cm3Cubic side of the element = 2.00cmNumber of atoms = 6.66 ×…

Q: The neutral hydrogen atom consists of   a. one proton and one neutron.   b. one proton, one…

A: Atomic number of hydrogen atom is 1. It is the first atom in the periodic table.

Q: The element oxygen has three naturally occurring isotopes, with 8,9, and 10 neutrons in the nucleus,…

A: The isotopes has the same atomic number but different atomic masses.

Q: 15 If an element has 26 protons and 23 electrons: a.    The element forms a cation b.    Two of the…

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Q: C. Isotopes or Different Elements? Use the information given below to determine if the pair of…

A: Isotopes :Atoms of the same element which the same atomic number but differentmass number are called…

Q: Give all of the terms that apply to each element: [1] metal; [2] nonmetal; [3] metalloid; [4] alkali…

A: Elements: These are pure substances that consist of the same kind of atoms in all respects.…

Q: Assume you have a pure sample of chemical element. Based on the characteristics below, what…

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Q: Which pair of elements do you expect to be the most similar? a. Molybdenum and Tin b. Nitrogen and…

A: Given,  a. Molybdenum and Tin  Electronic configuration of Mo = [Kr]4d55s1  Electronic configuration…

Q: Give all of the terms that apply to each element: [1] metal; [2] nonmetal; [3] metalloid; [4] alkali…

A: a) Sodium belongs to group 1, therefore, it is an alkali metal. b) Silver is an transition metal. c)…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: Rutherford's nuclear theory is based on three key points- (a) The nucleus is the core of the atom,…

Q: Group I (the alkali metals) includes lithium (Li), sodium (Na), and potassium (K). These elements…

A: Introduction The number of valence electrons (electrons which are located on outer energy level) of…

Q: What will expected mass of atom that is 40Ar (it contains18 protons, 22 neutrons and 18 electrons)…

A: Final answer :- 39.948

Q: Chemistry of Mars NASA's 1997 mission to Mars included a small robot, the Sojourner, that analyzed…

A: Given : There are 3 naturally occurring isotopes of MgO. And the abundance data of isotopes are,

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.