[Atomic mass and isotopes] An unknown element has two naturally occurring isotopes: X- 69 and X-71. The mass of X-71 is 70.9163 amu, and its natural abundance is 49.31%. Calculate the mass and natural abundance of X-69. (Hint: The atomic mass of this unknown element is 69.90 amu.) Isotope mass (amu) natural abundance (%) X-69 X-71 70.9163 49.31

Q: Boron has two naturally occurring isotopes: B-10 with an isotopic mass of 10.013 amu. B-11 with an…

A: Given, Mass of B-10 isotope = 10.013 amu Suppose, the percentage abundance of B-10 isotopes = y %…

Q: A certain element has two naturally occurring isotopes. The atomic mass of isotope 1 (81.7494 %…

A:

Q: An element has the following natural abundances and isotopic masses: 2297% abundance with 27.977…

A: Average atomic mass of an element is the sum of the masses of its isotopes each multiplied by its…

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: On earth, tin has 10 different stable isotopes. The heaviest, 124Sn makes up 5.80% of naturally…

A: Grams of 124Sn present in 38.3 g sample     = 38.3*(5.80/100)= 2.22 g

Q: 4. Copper is found in nature as two isotopes, 63Cu (69.0%) with a mass of 62.93 amu and 65Cu (31.0%)…

A: Average atomic mass of copper can be determined using the following equation.

Q: An element X occurs as three stable isotopes: X-21, X-22 and X-23. X-21 is 90.48% abundant and X-22…

A: Given : Element X exists as three stable isotopes. The three isotopes are: X-21 X-22 X-23

Q: An element has two isotopes. One isotope has a mass of 63.22g. The other has a mass of 67.88g. If…

A:

Q: An element has three naturally occurring isotopes with the following masses and abundances= Isotopic…

A: Given  Isotope  Mass            Fractional abundance    19.992    ( m1 )                    0.9048 (…

Q: On a certain planet two isotopes of indium can be found. The abundance of the isotope with a mass of…

A: We have the mass and abundance of two isotopes of indium. M1 = 114.9041 amup1 = 65.64 %M2 = 112.9043…

Q: An unknown element X has the following isotopes: ¹⁰X (20.00% abundant) and ¹¹X (80.00% abundant).…

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

Q: An unknown element X has the following isotopes: 140X (89.00% abundant) and 142X(11.00% abundant).…

A: Since,         Average Atomic mass=Σass of Isotope×% of Isotope100

Q: Back on planet Earth, elements have different isotopic distributions. The atom Chlorine ( Cl ) has…

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Q: Give the complete symbol (X), including atomic number and mass number, of a. a zinc atom with 36…

A: The general method to write the symbol of an element is given as shown below. XZA Here, A is the…

Q: Back on planet Earth, elements have different isotopic distributions. The atom Chlorine ( Cl ) has…

A: Given isotopic Atomic mass of  Cl -35  = 34.968853 amu Isotopic atomic mass of Cl-37    = 36.965903…

Q: Q1* Rubidium has two naturally occurring isotopes, rubidium-85 (atomic mass=84.9118 amu;…

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Q: Tur Enter numeric value al used in the filaments of incandescent light bulbs. Naturally occurring…

A:

Q: An unknown element X has the following isotopes: ¹⁴⁰X (89.00% abundant) and ¹⁴²X(11.00% abundant).…

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Q: 1. Use the following table of data to calculate the average atomic mass of an unknown element, X:…

A:

Q: An unknown element X has the following isotopes: 25X (80.50% abundant, mass = 25.03 amu) and 27X…

A: isotopes of X 25X: abundance - 80.50%                       (P1) = 80.50/100 = 0.8050          mass…

Q: [Atomic Weights: Zn 65.39 amu S 32.07 amu O 16.00 amu Report Table Express each number to the…

A: (a)Mass of empty crucible = given in data table = 23.578 gram (b) Mass of crucible+unknown = 27.432…

Q: A certain element has two naturally occurring isotopes. The atomic mass of isotope 1 (58.7461 %…

A:

Q: An unknown element X has the following isotopes: 1ºX (20.00% abundant, atomic mass = atomic mass =…

A:

Q: Using this information along with the information in the table, calculate the % abundance and the…

A:

Q: An unknown element X has the following isotopes: 126X (22.00% abundant), 128X (34.00% abundant),…

A: These are three isotopes of element X are given .Calculate the average atomic mass of X in…

Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

A:

Q: The element boron, a trace element in Earth’s crust, is found in foods produced from plants. Boron…

A: The correct option is C) Boron – 11.

Q: An unknown element X has the following isotopes: 25X (80.5% abundant) and 27X (19.5% abundant). What…

A: Given, The natural abundance of isotope I, 25X = 80.5 % The natural abundance of isotope II, 27X =…

Q: An unknown element X has the following isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant). What…

A: Given :  element X has the isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant).  Since Atomic…

Q: Element Kittypurrium (named after one of TA's cats) has two isotopes: Isotope 1 has an atomic…

A: Percent of isotop 1 = 91.162%   Atomic weight of isotop 1 = 40.005 g/mol  Percent of isotop 2 =…

Q: An element exist as 3 isotopes in nature. The isotopic masses (in amu) and percent abundance’s are…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: 8. Antimony has two naturally occurring isotopes. The mass of antimony-121 is 120.904 amu and the…

A: The question you provided pertains to the determination of the abundance of two naturally occurring…

Q: It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents…

A: It is clearly indicates that the Mg-24 posses a natural abundance of 79% along with other isotopic…

Q: In Star Trek, a (fake) element that often plays a role in the plot is dilithium (Dt), which has…

A: Since the % abundance is not given exactly, it is a variable, thus answer will be given in terms of…

Q: An element has two naturally occurring isotopes. Isotope 1 has a mass of 190.9606 amu and a relative…

A: Since,    Average Atomic mass=Σmass of Isotope×% of Isotope100

Q: The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le).…

A: The average atomic mass of an element with three isotopes is given by  Avg atomic mass =…

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.