Atoms consist of ________ that are positively charged; neu-trons, which carry a ________ charge; and ________, which carrya negative charge. The protons and neutrons together form theatomic ________, while the electrons ________ the nucleus.Atomic weight refers to the number of ________ and ________found in an element. Atomic ________ refers to the number ofprotons found in an atom of a given element.

Q: 19. How best describes isotopes?     20. Who discovered lectrons?

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Q: Mass Mass Abundance Abundance Avg. mass (from Table 1) Symbol (from Table 1) (Avg. Mass) x (% Abun…

A: Isotopes are same elements that have same atomic number, that is same number of protons, but differ…

Q: 5. Which of the following information can be determined from this isotope: sodium 23 L # of protons…

A: The isotope given is Sodium-23. Since the element is mentioned as sodium. Hence the atomic number of…

Q: IRevie Part B A certain element X has four isotopes. • 4.350% of X has a mass of 49.94605 amu.…

A: Atomic mass of an element can be defined as the mass of a one atom of given chemical element. It is…

Q: symbols of each atom,

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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: ) an element has the following isotopes. Calc the avg amu and identify. the element based on your…

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Q: 13. Mg has three stable isotopes. Given a sample of Mg with the following m. percent abundances:…

A: Average atomic mass = ?

Q: Fill in the blanks. The subatomic particle _____________ lacks a charge and are located in…

A: Subatomic particles are neutron , proton and electron in which electron has -ve charge proton has…

Q: 1. Which of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

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Q: Chemistry: Fundamentals and Principles Davidson presented by Macmillan Learning For each set of…

A: For a neutral atom, Atomic number = Number of protons = Number of electrons and Mass number = Number…

Q: What makes up most of the volume of an atom?A. protonsB. neutronsC. electronsD. empty space

A: The smallest particle of an element is called an atom. Atoms of different elements are of different…

Q: onsider two isotopes.  write the nuclear symbol for both isotopes how do they differe from each…

A: The word isotope consists of two words, iso means same and topo means position. It is defined as the…

Q: se the dropdowns to create a correct and omplete isotope notation. n isotope has 108 neutrons and 74…

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Q: An atom of atomic number 53 and mass Number 127contains how many neutrons?

A: Atomic number (Z) = 53 Mass number (A) = 127 Number of neutrons (n) = ?

Q: 132xe. 54

A: ->Atomic number = number of proton  -> number of proton = number of electrons (for neutral…

Q: How many protons, neutrons, and electrons are in the following atoms: * Mn d. An c. "U. S5

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Q: Refer to the figure below. (Hint: This isotope is a neutral atom.) What isotope is represented?…

A: We're given atomic structure of an atom.  In an atom, protons and neutrons are found in the nucleus…

Q: How many protons and neutrons are contained in the nucleus of each of the following atoms? Assuming…

A: Hi, since you have posted multiple subparts question, we will answer the first three subparts for…

Q: Using the atomic symbol below, how many neutrons are in this isotope? 2357 92 iments

A: The number of neutrons is equal to the difference between the mass number of the atom (A) and the…

Q: Rutherford’s Metal Foil experiment demonstrated __. A) that most of the mass of an atom is in its…

A: Answer:- This question is answered by using the simple concept of Rutherford metal foil experiment…

Q: 15. How many subatomic particles are there in C-14  A. 6 B. 8 C. 14 D. 20

A: There are three subatomic particles present in any atom or element- protons, neutrons and electrons.…

Q: Protons, neutrons and electrons each have a mass of 1 amu. a. True b. False

A: The mass of an electron is 0.000549 amu. The mass of proton and neutron is approximately 1 amu.…

Q: Isotopes have the same number of a. Protons; electrons Ob. Neutrons; protons c. Electrons, protons…

A: Isotopes are two or more forms of same element which consist of equal numbers of protons but…

Q: 5- Atoms of the same element with different mass numbers are called..

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Q: Identify for an atom of 55Mn: element name: _____________ Z, atomic number = ____ A, mass number…

A: The nuclear symbol of the isotope given is 55Mn.

Q: Electron- Proton- Atomic number- Atomic mass- Neutron- Nucleus- C. Isotopes or Different Elements?

A: A typical atom is made up of subatomic particles that include electrons, protons, and neutrons.…

Q: The + part of an element is called nucleus. The extranuclear part of the atom contains + charged + .…

A: The question is based on the atomic structure. We have to correctly identify subatomic particles…

Q: From the results of his gold foil experiment, Rutherford concluded that   Group of answer choices A.…

A: From the results of his gold foil experiment, Rutherford concluded that atoms are composed of a…

Q: postulate in the atomic theory did the discovery of isotopes contradict

A: The postulates of atomic theory are shown below: Matter is made up of small indivisible particle is…

Q: 13. .... ...The mass of the Avogadro constant of atoms, g/mol. normally, this is the average number…

A: We are to discuss that what the entity is known as, defined by the mass of avagadro constants of…

Q: 30. How many protons are there in Po-209? a. 84 b. 125 С. 123 d. 209 31. How many protons are there…

A: * Mass number of element =  Number of protons + Number of neutrons * Atomic number = number of…

Q: Atoms of a specific element that have the same number of protons but a different number of neutrons…

A: An atom is made up of protons, neutrons, and electrons. Protons and neutrons together called…

Q: Write atomic symbols for the following isotopes а. С-13 b. N-14 с. Pb-207 d. Cl-35 e. U-238 f. Cu-65

A: Atomic symbol is represented as                  zXA Where z= Atomic number  A= Mass number  And X=…

Q: In any neutral Adam there are equal numbers of? A. Neutrons and electrons B. Protons and neutrons…

A: Neutral atom are those having not any charge. They are wholely neutral

Q: Describe the experiment that provided the basis for ourunderstanding of the nucleus.

A: Describe the experiment that provided the basis for our understanding of the nucleus.

Q: An atom of 131 I contains ________ protons.

A: An atom = 131I  Number of protons = ?

Q: Hydrogen and oxygen react to form water, together they are a  .... - molecule - compound -…

A: Hydrogen and oxygen are atoms that combine to form water

Q: Atoms differ from ions in number of

A: Atoms are neutral; they contain the same number of protons as electrons. an ion is an electrically…

Q: 22. Elements that have metallic and non-metallic properties are called a. metalloids…

A: The question is asking to identify the term for elements that exhibit both metallic and non-metallic…

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: graphical information (socioeconomic background, family, education), his inital research focus, and…

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Q: How many protons, neutrons and electrons are present in the following: 40 a) s"B b) 173°CH c) 18°Ar…

A: The atomic number of element is the number of protons or electrons present in isolated neutral atom.…

Q: Enter yeur ansmer in the provided bes. 113 The atemic masses of the two stable isotopes ef indium.In…

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Q: Element Atomic number Mass number p+ е- 1. Не 1. 1. F 1. 1.

A: In an element, Atomic number = number of protons Atomic mass or mass number = number of protons +…

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.