mass number is the sum of protons and neutrons, the number of neutrons (N) equals the mass number minus the atomic number: Number of neutrons = mass number - atomic number, or N= A – Z (2.2)

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

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Q: Question 5 Carbon-12 and Carbon-14 are both isotopes of the element Carbon. Do they have the same…

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

Q: 1. a) Boron, ¹B has relative atomic mass of 10.81 amu and its mass number is 11 amu. Explain why the…

A: As you have asked for the solution to question no.3 in your given photo of multiple questions we are…

Q: Part D An atom of iron is represented by Fe. How many neutrons are in the nucleus of this atom?…

A: Explanation to the correct answer is given below.

Q: An unknown element (Uk) has three isotopes, seen in the table. One of the percentage values is…

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Q: How do I find the atomic symbol for an isotope of carbon with 7 neutrons? How do I find the symbol…

A: Atomic number: The atomic number (represented by the letter Z) of an element is the number of…

Q: b. HaOa В. . CiaHaaO1 d. Naci

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Q: 2. Magnesium has relative atomic mass of 24.31 amu. There are three naturally occurring isotopes of…

A: Given - Relative atomic mass of magnesium = 24.31 amu             Three isotope of magnesium =…

Q: Identify the INCORRECT Statement below: A The electron and the proton have charges equal in…

A: Atomic number = number of protons  Avogadro number = 6.022 x 1023

Q: Where applicable, answers accurate to 3 or 4 significant figures unless otherwise specified. 1.…

A: For a)  R75186.207e sub-atomic particle protons=75 neutron=111 no of electron=75   for b) The…

Q: Fill in the missing information: atom or ion? check all that apply number of number of protons…

A: for a neutral atom, number of protons are equal to the number of electrons.  atomic number of an…

Q: Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40. a) How are these…

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Q: 1. Naturally occurring isotopes of copper have the following abundances: 69.17% copper- 63 and…

A: We have 69.17% Cu-63 , 30.83% of Cu-65. We have to calculate the atomic mass of Cu.

Q: Element A has two isotopes. The first isotope is present 34.69% of the time and has a mass of…

A: Given,  Relative abundance (RA1) of first isotope = 34.69%  Molar mass of first isotope (M1) =…

Q: Are there any know isotopes of the element calcium? I need 2

A: Given  Statement : Are there any know isotopes of the element calcium. To find : any 2 isotopes of…

Q: 1. Question: Hint: 2. What is the symbol for the atom that has 9 protons, 10 neutrons and 9…

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

Q: Page |99 SUBATOMIC PARTICLES AND ISOTOPES Complete Symbol Atomic Mass Number of Number of Number of…

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Q: What are the number of protons, neutrons, and electrons in the following isotopes? Part A Si Express…

A: a) 1428Si -  Atomic number = number of protons = 14 Since it is neutral atom, number of protons and…

Q: An element from the Periodic Table is shown below. The atomic mass is given. A) Give the Name,…

A: The answer is given as follows

Q: Question attached

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Q: D Question 3 Which particle has a positive electrical charge? neutron O electron none of the other…

A: Question 3   proton have positive electric charge correct option is D       For mor information…

Q: O Reading list Q3 Complete the following table for the elements that are listed. If you have a full…

A: As per our guidelines we can only solve first question. Please resubmit other questions as next…

Q: Atomic Model Quiz 1. Label the atom below (include the nucleus, protons, neutrons, and electrons) 2.…

A: We are to fill the missing information in blanks about atomic structure.

Q: U Rounding To The N.. O (46) AFRICAN HOM. E Kiasha Savage -Cla. G english to french- 1/10 A boron…

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Q: 2. For each part of this problem the subatomic particles of two atoms are given below. Write the…

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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: contains 62 protons with positive three charge.

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Q: How many neutrons are there in a neutral Rhuthenium? * Your answer How many electrons are there in…

A: The periodic table represents elements arranged in the increasing order of atomic numbers in rows…

Q: The atomic theory states that all matter is made of atoms. These atoms are made of subatomic…

A: Matter is made up of atoms.  Atom contains particles like electron, proton and neutron. Proton and…

Q: Here is a list of statements. Put a check mark for the accurate ones and the necessary corrections…

A: Matters are the particles which consists mass and volume. Matter is not able to be seen by naked…

Q: Determine the number of protons, neutrons and electrons of the following ion: 3+ (284) Rg²+ protons…

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Q: I am struggling with understanding this review question, I have changed the numbers to practice the…

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Q: The net charge on an atom of a given element changes as ______ are added or removed. A) neutrons B)…

A: The net charge on an atom of a given element changes as ______ are added or removed.

Q: What elements of Democritus' theory did Dalton incorporate into his model of the atom? (Select all…

A: The transition from ancient philosophical ideas about the nature of matter to the development of…

Q: Select the symbol for an isotope with 78 neutrons and 53 protons. 53 131 O3Pt 53 O 53 131 53 Submit…

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Q: How many protons and neutrons are in an atom of iron that has a mass number of 55? Group of answer…

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Q: b) Develop a relationship (in the form of a single sentence or math equation) that can predict the…

A: Note: As per the company policies, we can answer the first question only.  I have answered the first…

Q: 3. In discussing individual atoms öf å spe isotopes have in common, which subatomic particle…

A: 3. Isotopes have same atomic numbers but different mass numbers.  Atomic number  is determined by…

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: Page |99 SUBATOMIC PARTICLES AND ISOTOPES Complete Symbol Atomic Mass Number of Number of Number of…

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Q: 1.3 Build an Atom Phet - Part 2: How do we of the same element have the same number of protons but…

A: 1. Isotopes of the same element have the same number of protons but different number if neutrons.…

Q: 1) A molecule is composed of two or more of the same or different elements. A) true B) false An atom…

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Q: Why is the atomic mass of iron, 55.845 amu, most similar to the mass of iron-56, yet less than 56…

A: We have been asked why is atomic mass of iron, 55.845amu, most similar to iron 56, yet less than…

Q: 2. How many protons, electrons, and neutrons do the three isotopes of hydrogen have? (Protium,…

A: Fill the table---

Q: The atomic number of an element is 31 and the mass number of one of its atoms is 65.  This atom…

A: Atomic number :- The number of protons present inside the nucleus of an atom is called mass number (…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.