10. Which of the following does not match the others? 168 (A) 67.2 3.88 1000 100 10 All, (M)/mol) (B) 1s 2s 2p (C) (D) ofelectron S + M N -

Q: ormat Slide Arrange Tools Layout Transition Background Theme I IRIQ III . 2 ... .a II .4 .I..…

A: Solution- 1. The iron have 30 neutrons  Becuase atomic mass - no of proton or electrons or atomic no…

Q: In 1982, the production of a single atom of 266/109  Mt (meitnerium-266) was reported. Describe the…

A: The given element is meitnerium (Mt). It has mass number equal to 266 and atomic number equal to…

Q: What is the calcium isatope with 20 nevtrons? 才乙

A: The atomic number of calcium is 20 (Number of protons). The symbol of the calcium atom is Ca. The…

Q: . A hydrogen ion (H+) has neutron(s), proton(s), andelectron(s).a. 1; 0; 2 b. 0; 1; 0 c. 0; 0; 1 d.…

A: Neutron, proton, and electron are fundamental subatomic particles.  The number of protons is equal…

Q: Activity 3- Fill in the Table Can you do it for carbon isotopes: carbon-12, carbon13 ai has an…

A: Isotopes are elements having same atomic number and different mass number  For example  Hydrogen has…

Q: 8. What does the atomic number of an element specify?

A: 8. Given term,      Atomic number

Q: The nucleus of 6Li is a powerful absorber of neutrons. It exists in the naturally occurring metal to…

A: Given nucleus is Lithium .

Q: A sample of element X contains 90% X-35, 8.0% X-37, and 2.0% X-38 atoms. The average atomic mass…

A: The average atomic mass = M1× M1(%) + M2× M2(%) +...... +Mn× Mn(%) / 100. Hence, M1 =35,M2= 37, M3…

Q: Calculate the atomic mass of the element: Mass                Abundance 22.1760             45.00%…

A:

Q: Gallium (Ga) consists of two naturally occurring isotopeswith masses of 68.926 and 70.925 amu. (a)…

A: (a) The atomic number of gallium is 31. Thus, all isotopes of this element (gallium-69 and…

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 radioisotope carbon-11 will decay through Periodic Table of the Elements hydrogen 1 H 13 14 15…

A: The radioisotope C-11 has 6 protons and 5 neutrons in its nucleus. The n/p ratio = 5/6 ~ 0.833

Q: A sample containing 1.00X 10 stored for 135 day s will remain at the end of the storag e period of…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: Level 4: 7. Relate some characteristics of the agents to properties of elements on the Periodic…

A: The facial expressions are related to the valency of the element. The tetravalent elements like…

Q: 10. For the Isotope 6731Ga A. What is the atomic number? B. What is the mass number? C. What is the…

A: Question 10: Given isotope is: 6731Ga. What is its atomic number? What is its mass number? How many…

Q: Which is the more abundant isotope of copper, 63Cu or 65Cu?(a )63Cu(b) 65Cu

A: Which is the more abundant isotope of copper, 63Cu or 65Cu?

Q: f you look at Gallium's atomic mass on the periodic table, which isotope is more abundant in nature:…

A: Gallium belongs to IIIA group in the periodic table. There are two isotopes of Gallium that occurs…

Q: What is the atomic mass of oxygen-16 (15.9949 Amy) at 99.757%

A:

Q: Which of the following statements is not correct about the stability of nucleus? a. The stable…

A: all elements with more than 83 protons such as uranium, radium, and polonium have unstable nuclei.…

Q: Silver has two isotopes that are common  in nature. Ag - 107 and  Ag - 109. What  makesthese  two…

A: The solution is given below -

Q: Rank the following particles by INCREASING their size (lowest first). Rb+ Te2-  In3-  Xe A, In3-…

A: A multiple choice question based on the size of elements, which is to be accomplished.

Q: hen an iron core reaches a mass so large that even degenerate electrons can no longer support it and…

A: degeneracy pressure halts the collapse

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

A:

Q: 2. Define shielding and effective nuclear charge. What is the connection between the two?

A: At the nucleolus positively charged protons are present. Hence, nucleolus attracts the negatively…

Q: 2.34 Describe Thomson's model of the atom. How might it ac- count for the production of cathode…

A: Thomson's model of atom is also known as plum pudding model. According to plum pudding model, atom…

Q: Atomic #- 10 Mass #- 20 # of p+ = # of n - # of e-D # of valence e Atom Symbol- Name of Atom

A: Atom contains sub atomic particles  such as  protons , electrons and neutrons

Q: Visited (Atomic masses: iron-56 = 55.9349 amu; hydrogen-1 = 1.0078 amu; mass of neutron = 1.0087…

A:

Q: 7. In an atom, the charge of the dense fraction is similar to that of alpha particles.

A: The answer is as follows:

Q: 4.40 Two isotopes of rubidium occur naturally, Rb and Rb. Which isotope of rubidium is more…

A: Average atomic mass of Rb = 85.47 Let percentage abundance of 85Rb = x and percentage abundance of…

Q: For the 19O2- Isotope identify the number of Protons,  Neutrons,  Electrons

A: For a general element, XZA Z- atomic number = number of protons A- mass number = number of protons +…

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: mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken…

A:

Q: What charge would exist on chlorine (#17) after it reacts with a rubidium atom (#37)?

A: We would check electronegativity values of determine the charge.

Q: 6. No element exists with mass number larger than about 300. Explain Why?

A:

Q: Genetic ift-Wikip. - Algebra Foundatio. Image result for sur. 6 Classwork What belongs in place of…

A: Given, 26Mg  Number of neutrons = ? Mass number = 26 In the periodic table the atomic number of…

Q: What will be the systematic name and atomic symbol given to a. element 202 b. element 136

A: We are to write systematic names and aromic symbol for elements 202 and 136.

Q: Gold is very malleable which means it can be pounded into very thin sheets. Decorative gold leaf can…

A: The Diameter of the gold atom = 1.4 x 10-10 m The thickness of the gold sheet = 0.10 µm =0.10 x 10-6…

Q: Calculate the mass defect (g/mol) for an atom of 2914Si whose isotope mass is 28.9764949g/mol. mass…

A: We have to find mass defect

Q: Explain how forces are transmitted and describe the link of forces with subatomic carrier particles.

A: In a quantum field theory,force carrier is messenger particle that gives force between other…

Q: 2. (a) Determine the mass number of a nucleus whose radius is approximately equal to two-thirds the…

A: Radius of new element is two third of the radius of Ra-230. Here, we have to find the name of new…

Q: If rubidium has an emission line at 1.28X 10-6 m and ng is 3, what is the initial energy level? 07…

A: Given:- λ = 1.28 x 10-6 m  nf = 3 ni =?

Q: 6) What are the circular paths around the nucleus where electrons revolve? 7) There is an X element…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Determine the missing element 16S------1°e + 35 5---

A: Like all reaction, in radioactive decay reaction mass and charge balance are maintained.

Q: What is the core charge of oxide-15

A: The atomic number of oxygen-15 = 8

Q: 165 21. Identify the neutron-to-proton ratio for the isotope 67H0 and determine if the isotope is…

A: Identify the neutron-to-proton ratio in the given nuclide--

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.