QUESTION 16 The first evidence that isotopes exist was the discovery of elements O with the same chemistry but with different radioactive properties . with the same atomic weights but different chemical properties with the same atomic weight but different charges. O with different atomic weight and different chemical properties.

Q: A fictional element has two isotopes and an atomic mass of 76.34 amu. If the first isotope (Isotope…

A: Average atomic mass = 76.34 amu  First isotope = 20.21 amu  Second isotope = 80.76 amu  We have to…

Q: A primary goal of medievel alchemists was to turn base metals in gold. Typically they worked with…

A: Mass number = number of neutrons + number of protons Atomic number = number of protons

Q: a. Write the atomic symbol, in the form X, for an isotope that has 5 protons and 5 neutrons.…

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Q: Which of the following sentences are correct? 1. Atomic mass is the weighted average of the masses…

A: The mass number or atomic mass can be estimated by its various isotopes present in nature and their…

Q: Suppose an element consisted of two isotopes with masses of 89.9 amu and 91.1 amu. If 1.500x103…

A: When elements occur in earth crust in more than 1 natural form or commonly known as isotopes, their…

Q: Naturally occurring chlorine (Cl) consists of two isotopes. One of the isotopes has a mass of 34.969…

A: Isotopes have same atomic number but different atomic mass or mass number. Atomic number is equal to…

Q: Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same…

A: atoms of the same element have the same number of protons, but some may have different numbers of…

Q: Suppose that one of Millikan’s oil drops has a charge of -4.8 * 10 - 19 C. How many excess electrons…

A: The given charge is -4.8×10-19 C.   The charge of one electron is -1.6×10-19 C.

Q: MCQ 20: The number of atoms in the same element has the same number of A. protons B. electrons C.…

A: ATOM The atom is the smallest unit of a chemical element and is the basic unit of matter which…

Q: 2. IRON Atcimic Number: Atomic Mass: # of Protons: # of Electrons: # of Neutrons:

A: The atomic number of an element is equal to the number of protons in the nucleus of the atom. In the…

Q: The following questions are based on elements and isotopes. The following expression will help you:…

A: Answers of the questions are given below.

Q: Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even by a soft…

A: Isotopes are variations of a single chemical element that varies in the number of neutrons and…

Q: Question 11- Two isotopes of the element Fa occur naturally, with 282145 Fa At 23.4% (281.7 amu) and…

A: The atoms mass is the mass of neutrons and protons of an atom. The weighted average mass method can…

Q: & The other form of isotope notation is known as Add Text Here 9. For each isctope, write it in the…

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Q: Section 5.4: ISotopes сорes 17. Can two different elements have the same atomic number? Explain.…

A: Yes two different elements can have the same ATOMIC NUMBER.

Q: question below

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Q: Boron has an average atomic mass of 10.81. One isotope of boron has a mass of 10.012938 and a…

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Q: QUESTION 6 Which of the following is a fundamental particle (not made of smaller particles)? O…

A: All the matter is composed of atoms. The atom can be divisible into smaller particles.

Q: Which of these statements is an accurate description of an atom of potassium-40? O It is an isotope…

A: To determine which of the given statement describe the potassium-40  It is an isotope with 40…

Q: complete the following information. If necessary, use the periodic table. Nuclear symbol = ? Charge…

A: Answer :- Nuclear symbol :- Chemists generally used certain element using standard atomic notation ,…

Q: For the following questions determine the percent abundance of each isotope. The periodic table is…

A: Given Two isotope Oxygen - 16(smaller isotope)      Atomic mass = 16Oxygen - 18(larger isotope)…

Q: What is the atomic mass of Lithium, if 7.49%  is Li-6 and 92.51% of Li-7?

A: Given, The natural abundance of Li-6 = 7.49 % The natural abundance of Li-7 = 92.51 %   Considering,…

Q: QUESTION 12 An isotopes of an element occurr with equal frequency. O True O False

A: Applying definition of isotope.

Q: Copper consists of two isotopes: 6329Cu and 6529Cu. Part A If the atomic mass for copper on the…

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Q: Copper has two isotopes, 63Cu and 65Cu. If the atomic mass of 63Cu is 62.93 and is found 68.95% in…

A: Given : There are only 2 naturally occurring isotopes of copper. Mass of Cu-63 = 62.93 amu Mass of…

Q: Question 1 What is the proper definition of an isotope? Group of answer choices A. Atoms that…

A: Nuclear chemistry deals with the reactions involving in the nucleus of an atom. The nucleus of an…

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: Hi, I was wondering if you could help me with a question. Do I just take the percentage of each…

A: The isotopes of magnesium have following natural abundances: Isotope Abundance Mass (amu)…

Q: if the atomic element has the following: Symbol    Protons        Neutrons         Electrons…

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Q: Calculate the atomic mass of the following element. Experimental analysis show three isotopes:…

A: Given isotopes are : Isotope Mass     % 1 42.315 88.990 2 43.320 3.0090 3 44.325 8.0010

Q: Pb has an average atomic mass of 207.19 amu. The three major isotopes of Pb are Pb-206 (205.98 amu);…

A: In order to calculate the percent abundance of the isotopes we have to make use of average masses of…

Q: Question attached

A: Number of protons in an isotope is same to its atomic number and it is equal to the atomic number of…

Q: assume this element (45.0 amu) has three naturally occuring isotopes. first isotope has 15.0%…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: Question 30 of 39 Antimony has two naturally occuring isotopes, 12 Sb and 123sb. 12' Sb has an…

A: The question is based on the concept of isotopes. We have to calculate elemental abundance of each…

Q: Question 2 The actual mass of a 17Cl atom is 36.9659 amu. Calculate the mass deficiency (amu/atom)…

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Q: 100 100 relative abundance relative abundance (%) 50 50- 10 12 mlz 06 88 94 92 For each of the two…

A: 1.) Average atomic mass is calculated using formula : Average Atomic mass : X1 M1 + X2 M2 + X3 M3 +…

Q: State one similarity and one difference between the isotopes of tin.

A: Given : Isotopes of Tin To find: One similarity and one difference between the isotopes of tin…

Q: The correct way to write the isotopes Na, AI, Kr, 19r in hyphenated form is sodium-24, aluminum-29,…

A: Isotopes: Having the same atomic no. but different atomic masses are called Isotopes. ex: 13C6 ,…

Q: Question 9 of 20 Jesús sketched models of two different neutral isotopes of sodium. If the isotope…

A: Atoms that have the same atomic number (number of protons), but different mass numbers (number of…

Q: 32p is an isotope of phosphorus that is frequently used in Biology labs. It has a mass number of 32.…

A: The given isotope is 32P.  The mass number of 32P, A = 32  Atomic number of 32P, Z = 15

Q: Isotope name atomic # mass # # of protons # of neutrons # of electrons thorium-232 thorium-229…

A: Atomic no. = No. Of protons = No. Of electrons No. Of neutrons = mass no. - no. Of protons

Q: Using modern periodic table give two pairs of elements where the atomic masses are in opposite order…

A: The modern periodic table is seven periods and eighteen groups. The elements present in a same group…

Q: ElementX has 3 isotopes. What is the average atomic mass? Isotope 1 has a mass of 24 with a…

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Q: Subatomic particle Neutron Proton Electron Charge Nitrogen Oxygen Fluorine Sodium Magnesium Mass…

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Q: Part C What isotope has 13 protons and 14 neutrons? Enter the name of the element followed by a…

A: A) Given element : iron-56 Iron has symbol = Fe Protons are positively charged . Electrons are…

Q: Find the average atomic mass (atomic weight) for lithium on the periodic table. There are only two…

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Q: Question 14 Which statement about isotopes of the same element is NOT correct? O The all have the…

A: Isotopes are elements having same atomic number but different mass number.(i.e. same number of…

Q: Question 1: The following questions are based on elements and isotopes. The following expression…

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