One of the heaviest atoms found in nature is 238U. Its relativeatomic mass is 238.0508 on a scale in which 12 is the atomicmass of 12C. Calculate the mass (in grams) of one 238U atom.

Q: Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to…

A: Given, The dimensions of the paper are =8.5’’ x 11’’ (inches) The mass of a proton is = 1.67262 x…

Q: An element with an average atomic mass of 17.673 amu has two naturally occuring isotopes If one…

A: Given:- Average atomic mass = 17.673 amu  Mass & abundance of one isotope = 18.731 amu &…

Q: amino acid methionine is depicted in the picture.  C5H11NO2S is the molecular formula for…

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Q: What is the atomic weight of element X of an atom X-23 which have an isotopic mass of 23.02amu and…

A: The Atomic Weight of element X ofX23⇒23.02 amu isotopic mass ,X25⇒25.14 amu isotopic mass .

Q: Only two isotopes of boron (B) occur in nature; theiratomic masses and abundances are given in the…

A: Concept introduction: Isotope is defined as atoms of same element with same atomic number but…

Q: Differentiate between different isotopes of an element?

A: A number of atoms of some elements have been identified, which have the same atomic number but…

Q: Suppose we redefined the atomic mass scale by arbitrarily assigning to the naturally occurring…

A: The atomic mass of a single atom is simply its total mass of the protons, neutrons, and electrons in…

Q: How many protons, neutrons,and electrons are there in an atom of (a) 10 5B, (b) 36Ar, (c) 8538Sr,…

A: An atom consists of sub-atomic particles which are protons, neutrons (both present inside the…

Q: An element consists of 1.40% of an isotope with mass 203.973 u, 24.10% of an isotope with mass…

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Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: The formula for fractional abundance is, Fractional abundance=0.01×Abundance(%)

Q: How to calculate the relative atomic mass (6.015122) of 6Li, from the atomic mass of Lithium?

A: In the given question we have to calculate the relative atomic mass of Lithium.  we know that,…

Q: The element copper has two naturally occurring isotopes with masses of 62.9400 amu and 64.9300 amu.…

A: The element copper has two naturally occurring isotopes with masses of 62.9400 amu and 64.9300 amu.…

Q: Roughly speaking, the radius of an atom is about 10,000times greater than that of its nucleus. If an…

A: The radius of the atom in miles has to be given,

Q: An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass…

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Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

A: Given that Isotope Mass (amu) Relative Abundance 100Ru 99.9 48% 99Ru 98.9 52%   To…

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

A: Isotopes are the atoms of “same elements which have different number of neutrons” in their nucleus.…

Q: in nature, element X is found as a mixture of two isotopes, one with mass number 107 and the other…

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Q: The elements in Groups 1A(1) and 7A(17) are all quite reactive. What is a major difference between…

A: The elements in Groups 1A(1) and 7A(17) are all quite reactive. What is a major difference between…

Q: If the reference for atomic masses of the elements were changed to 12C = 10.00 the relative atomic…

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Q: Chromium has four naturally-occurring isotopes: 4.34% of 50Cr, with an atomic weight of 49.9460 amu;…

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Q: There are two naturally occurring isotopes of B- boron. One has an atomic mass of 10.013 amu and a…

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Q: Bromine has only two natural isotopes, and they occur in about equal abundance.   If 79Br79Br is…

A: Average atomic mass of an element is obtained by the sum of the product of isotopic mass and natural…

Q: n element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with mass…

A: Given that, Element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with…

Q: What are the factors that affect the average atomic mass of a mixture of isotopes?

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Q: That is to say the atom 108 47Ag . Determine the number of protons, neutrons and electrons in this…

A: The general representation of the atomic symbol. XZAWhere, X = atomic symbolA = mass no.Z = atomic…

Q: An element consists of 4.35% of an isotope with mass 49.946 u, 83.79% of an isotope with mass…

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

Q: a) Which two of the following are isotopes of the same element:3116X, 3115X, 3216X? (b) What is the…

A: Two or more elements with identical atomic number but with different atomic mass are called…

Q: What is the symbol for the isotope of 55Fe that possesses 31 neutrons? Express your answer as a…

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Q: Enter the appropriate symbol for an isotope of phosphorus-32 corresponding to the isotope notation…

A: The term isotopes can be defined as the variants of a given chemical element that differ in neutron…

Q: 13. Which pair represents isotopes? a. He and »He b. seFe and sa:Mn c. Si and suP 14. Which pair…

A: Identify isotopes pair among them --

Q: A new isotope is discovered that has a mass of 25 amu and 15 neutrons. What is the elemental…

A: Given that, Mass = 25 amu No. of neutron=15 Element ?

Q: Calculate the atomic weight of antimony, which has two isotopes with the following properties:…

A: The atomic mass of an element is result of weighted average of masses of its corresponding…

Q: Naturally occurring rubidium (Rb) consists of two isotopes: 85Rb (atomic mass 84.9117) and 87Rb…

A: Any chemical element's variants which are distinct in neutrons number but same in protons number are…

Q: Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the…

A: Given that : Isotopic mass of X-39(m1) = 38.70 amu Abundance (A1) = 33.00% Isotopic mass of X-41(m2)…

Q: a) How many protons, electrons, and neutrons are in an 266 Sg atom? (atomic mass = 266) b) Atoms…

A: Elements are the species which consist of only one kind of atoms. In other words, species which…

Q: The natural abundance of 3He is 0.000137%. (a) How manyprotons, neutrons, and electrons are in an…

A: a. The number of protons = 2  The number of electrons = 2 and  The number of neutrons = 3-2 = 1

Q: Calculate the atomic mass of an element Y if Y has 2 naturally occurring isotopes with the following…

A: Given Isotope Y, that has two isotope Y137 and Y129

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: A certain element consists of two stable isotopes. The first has a mass of 138 amu and a percent…

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Q: Estimate the percentage of the total mass of a 58Ni atom that is due to (a) electrons, (b) protons,…

A: Ni-58 has 28 electrons, 28 protons and 30 neutrons in it

Q: Determine the number of protons and the number of neutrons in isotope. 226Ra88

A: 226Ra88 is the isotope of Radon. Now, how to determine number of protons and number of neutrons.…

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

A: The given statement is  Is the statement inconsistent with Rutherford’s nuclear theory as it was…

Q: An element has two naturally occurring isotopes. One has an abundance of 51.839% and an isotopic…

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Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

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Q: The americium isotope 241Am is used in smoke detectors.Describe the composition of a neutral atom of…

A: Each element/atom is made by neutrons, protons, and electrons. Neutrons, as well as protons, do…

Q: A hypothetical element Q (atomic mass: 142.61) consists of two stable isotopes: 45.3 % isotope A…

A: Relative abundance of isotope A is 0.453(45.3%) and hence, relative abundance of isotope B is 0.547…

Group 14 Elements

The following elements come under group 14 of the periodic table.