In 1982, the production of a single atom of 266/109  Mt (meitnerium-266) was reported. Describe the composition of a neutral atom of this isotope for protons, neutrons, and electrons.

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

A: The isotopes are elements having same atomic number with different mass number, which have same…

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

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Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: Define the term Neutron-to-Proton Ratio?

A: To find: The Definition of Neutron-to-proton ratio

Q: A neutron and a proton combine to form a nucleus why does the mass. Of the nucleus differ from the…

A: Given: A neutron and a proton combine to form a nucleus. And the mass of the nucleus differ from the…

Q: Determine the number of protons and the number of neutrons in isotope. 147N

A: Protons and neutrons are present in the nucleus and collectively known as nucleons. Protons are…

Q: The cobaltisotope(t1 / 2 = 5.28yr) C^60is produced at a rate of 10 ^ 12atom / sec for a period of…

A: Given that, t1/2 = 5.28 year = (5.28×365×24×3600) s Hence, disintegration constant = λ =…

Q: neutrons/cm2.s), calculate the number of neutrons captured per second by 1.0 cm-2 of the

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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: Determine the number of protons and the number of neutrons in isotope. 20882Pb

A: In 20882Pb :

Q: How many protons and neutrons are in the naturally-occuring isotope Selenium-80? How do I solve…

A: Atomic number (Z) is defined as number of protons present in an atom.  In a neutral atom number of…

Q: If an isotope has 90 protons, how many neutrons are required in order for it to have a stable atomic…

A: Concept-: Isotope: Isotopes are known as members of a family of an element which all have the same…

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

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Q: Part C 98 43 Enter your answers numerically separated by a comma. ? ....... Np, Nn = protons,…

A: The question is based on the concept of atomic structure. We have to identify number of subatomic…

Q: There are two naturally occurring isotopes of europium, 151Eu (151.0 amu) and 153EU (153.0 amu). If…

A: Given : There are 2 naturally occurring isotopes of europium. Mass of 151Eu = 151.0 amu Mass of…

Q: The atomic structure of four particles are shown. electrons protons neutrons 18 17 18 Q 18 17 20 17…

A: Isoelectronic species can be defined as the species which have same number of electrons in an atom.

Q: 2.28 The following radioactive isotopes are used in medicine for imaging organs, studying blood…

A: Isotopes are the nuclides which contain same atomic number but different mass number. Atomic number…

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: 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: An element has an atomic number of 41 and a mass number of 81. Using your determination as to…

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Q: The mass of a proton is 1.673 x 10-27 kg and the diameter of the nucleus of the H atom is 1.0 x 10°…

A: Given in the question, Mass of proton = 1.673 ×10-27kgDiameter of nucleus = 1.0 ×10-3 pm Radius of…

Q: Using atomic notation, indicate the isotope having 26 pt, 32 nº, and 26 e-.

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Q: Why is the atomic weight of chlorine 35.4527 in stead of exactly 35

A: Answer:  Since chlorine exhibits two isotopes Cl35  and  Cl37 in 3:1 ratio Hence we will take…

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: Calculate the number of atoms of Zn in a sample with mass = 2811 amu.

A: We have to predict the number of atoms of Zn.

Q: The element gallium (Ga, Z = 31) is what type of element

A: Atomic number of Gallium(Ga) is 31.Electronic configuration is [Ar] 3d104s24p1.It is a p- block…

Q: In the notation 289 115 Mc, the number 289 is the 3 number of electrons atomic number atomic mass…

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Q: On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 %% for…

A: The average atomic mass of an element can be calculated as shown below.

Q: Which element is a halogen? (a) Ne (b) O (c) Ca (d) I

A: The substances that have a tendency to occupy space are considered as matters. The matters can be…

Q: Determine the number of protons and the number of neutrons in isotope. 99Tc43

A: General representation of an element - AXZ were, X = Symbol of an element. A = Mass number. Z =…

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

A: Answer :-  R44101u…

Q: The element gallium (Ga) exists in two isotopic forms with the following abundances: 60.16% 69GA and…

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Q: To how many significant figures would you need to express the mass of an thorium-228 atom in amu to…

A: Isotopic mass of thorium-228 is 228.0287411 amu Rest mass of an electron in amu = 0.00054858 amu

Q: An atom of 131 I contains ________ protons.

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

Q: The Tietjen and Moore paper gives the following set of 8 mass spectrometer measurements on a uranium…

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Q: An atom has a very small nucleus surrounded by an electron "cloud." The figure below represents the…

A: The diameter of the nucleus is given that 2 mm. The electron cloud or diameter of atom is 200m. That…

Q: The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium-185, what is the…

A: Average atomic mass = ∑i=1n (mass of ith isotope)(% abundance of ith isotope)100 Where "n"…

Q: Determine the number of protons and the number of neutrons in isotope. 1940K

A: For any element, we can represent  it in stand form as XAZ where X resents the symbol of the…

Q: Potassium (Z = 19) has three primary isotopes: K-39, K-40, and K-41. 1) The half-li fe of K-40 is…

A: Given: Half life of K-40 = 1.248 X 109 years Initial activity of K-40 = 820 Ci And final activity of…

Q: Determine the number of protons and the number of neutrons in isotope. 22286Rn

A: An element consists of same type of atoms. An atom is composed of certain sub-atomic particles;…

Q: Consider the following data: isotope                  atomic mass                    abundancy%…

A: ANS. Option B) 31.19 amu

Q: 5. Gallium has two naturally occurring isotopes with the following masses and natural abundances.…

A: The average atomic mass of an element having isotopes can be calculated from the formula given…

Q: Which of the following has a different number of neutrons? a.123Sb b.125I c.120Cd d.122In

A: Which of the following has a different number of neutrons?

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

A: Given that: Isotope Mass(amu) Relative abundance 98Ru 97.9 90.3% 99Ru 98.9 9.7%

Q: mass е relative (amu) abundance 111.9 90.3% 118.9 9.7%

A: Average Atomic mass = = (M1X1 + M2X2)/(X1+X2) = (111.9×90.3 + 118.9×9.7)/100 = 112.579 amu = 113

Q: what are the properties of cathode rays and anode rays?

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Q: Determine the number of protons and the number of neutrons in isotope. 33P15

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Q: Give the number of protons and neutrons in the nucleus of boron-11

A: The number of protons and neutrons in the nucleus of boron-11 is to be determined.

Q: Which contains 7 neutrons? B 13 28 Si

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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.