How many electrons are in a strontium atom (sr)? Does an atom of Sr gain or lose electrons when forming an ion? How many electrons are gained or lost by the atom? When Sr forms an ion, the ion has the same number of electrons as which one of the noble gases?

Q: is formed when elements combine. The COIna chemical reaction a new Different elements combine to…

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Q: The ions of most main-group elements have the same number of __________ as the noble gas that is…

A: Modern periodic table contains groups and periods where the elements having same number of outer…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: How many atoms are there in formula AL2O3? (aluminum oxide

A: SOLUTION:Step 1: In the given Formula Al2O3 (aluminum oxide), there are two aluminum atoms and 3…

Q: An ionic compound forms when calcium (Z = 20) reacts with iodine (Z = 53). If a sample of the…

A: The given data contains, number of calcium ions = 7.4×10-1

Q: How many protons are in chlorine Cl.

A: Atomic number is equal to number of protons, atomic mass is equal to number of protons and number of…

Q: 2.74 An ionic compound forms when lithium (Z = 3) reacts with oxygen (Z = 8). If a sample of the…

A: Given data contains, Number of lithium ions is 8.4×1021 Li ions. Atomic number of Li is 3. Atomic…

Q: Calcium phosphide consists of two ions chemically bonded together. What are the charges of each ion?…

A: To write the chemical formula of compoundwhich follow the following rule:-(i) write the symbols of…

Q: How how many electrons are in 56 138 Ba+2 ?

A: How how many electrons are in 56 138 Ba+2 ?

Q: another

A: An atom consist of electron , proton and neutron. Where electron is negatively charged. Proton is…

Q: Suppose that one of Millikan’s oil drops has a charge of −4.8×10−19 C.How many excess electrons does…

A: Given,One Millikan’s oil drop has a charge = -4.8 × 10-19 CCharge of an electron = -1.6 × 10-19…

Q: is NO3- a polyatomic or monatomic ion? How many total atoms are present in this ion?

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Q: how many electrons are in oxygen

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Q: When a piece of cadmium (Cd) is placed a solution of nickel chloride (NICI2), the following reaction…

A: Hey, since there are multiple subparts posted, we will answer first eight subparts. If you want any…

Q: - How many moles of hydrogen atom required to complete the following formula by adding the correct…

A: In organic compound Each carbon atom should have 4 hydrogen atom individually to count as a…

Q: an ion that has 55 protons and 54 electrons is ....

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Q: When radium becomes an ion, what is its charge? O There is not enough information to answer this…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What are the properties of Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I)

A: Halogens: These are the elements that are present in the 17th group of the periodic table. The given…

Q: How many protons are in an ion with 1010 electrons and a −1 charge? number of protons:     How many…

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Q: Fill in the table for the following atoms or ions. Please pay careful attention to the difference…

A: Complete the following table ---

Q: A sunywcc.sln.suny.edu compounds on Page 61 of the lab Manual in the list beginning with CO and…

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Q: How many electrons is the element Strontium (Sr) likely to gain or lose?

A: Strontium is represented by Sr. The atomic number of Sr is 38. Sr Electronic configuration = [Kr]…

Q: How many protons, neutrons and electrons are in the N^3– ion with a mass number of 14?

A: The atomic number of an element can be defined as the number of protons present in the nucleus of…

Q: 8. BaF2

A: why is the name Barium 1 fluoride instead of Barium 2 Fluoride ?

Q: An ion has 34 protons and a charge of 2-. How many electrons does this ion have

A: Given: Number of protons = 34. And charge on ion = -2.

Q: Write the symbols and charges of the monatomic ions formed by calcium AND phosphorus, and write the…

A: Calcium gives divalent ions (Ca2+) Phosphorous  forms the ions P3-, P4-, P3+, P5+

Q: What does an atom gain or lose when ions are produced? A)protons B)neutrons C)electrons

A: Option (C)

Q: An ion has 28 protons, 24 electrons, and 30 neutrons. What is its ionic charge?

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Q: How many gold atoms are in a 0.277 ounce, 18 K gold bracelet?(18 K gold is 75% gold by mass)

A: The number of gold atoms in 0.277 ounce, 18K gold bracelet are to be calculated, where 18K gold is…

Q: An ion from a given element has 30 protons and 28 electrons. What is the charge on the ion? What is…

A: Note= According to our guidelines we are supposed to answer only one question.  Kindly repost other…

Q: CO2 SH2 many atoms of each element in the formula shown? How many atoms of Hydrogen are in this…

A: Number of Atoms of Each element in the formulas are given as:

Q: Calculate the mass, in kg, of each sample. I.) 1.68×1026 cadmium atoms. II.) 3.57×1027 nickel…

A: Here we need to calculate the mass of each sample as: I.) 1.68×1026 cadmium atoms. II.) 3.57×1027…

Q: What is the charge on a hypothetical ion with 45 protons and 47 electrons?

A: Every atom has equal number of electrons and protons . Therefore they are neutral. Every extra…

Q: An ion from a given element has 56 protons and 54 electrons What is the charge on the ion? What is…

A: The protons tell you the atomic number....

Q: Answer the following questions about the 34 s2:.

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Q: How many electrons are necessary to produce a charge of -1.0 C? What is the mass of this many…

A: SOLUTION: Step 1: An electron has a charge of -1.6 ×10-19 C. The no of electrons necessary to…

Q: A sample of an ionic compound containing iron and chlorineis analyzed and found to have a molar mass…

A: Given molar mass = 126.8 g/mol The iron and chlorine containing compound Molar mass of Fe = 55.8…

Q: polyatomic ions?

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Q: How many Sulfur atoms are there in this molecule? Fe,(SO,), 4/3

A: Analysis atoms in Fe2(SO4)3 ).

Q: A 14.09 g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition…

A: The law of constant composition is : samples of a pure compound always contains same elements in…

Q: 1. Calculate the average atomic mass of the element Hawkanium, a new element just discovered…

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Q: An ion from a given element has 26 protons and 23 electrons. What is the charge on the ion? What is…

A: Note: As per our guidelines, we are supposed to answer only one question. Please repost the other…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: How many nonmetals are in the 6th period

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: . What are the three types of subatomic particles? Give their names, charges and location in the…

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Q: How many of EACH element are there in this chemical formula? MgBr, Mg: Br:

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Q: How many protons, neutrons, and electrons does 79se2-  ion?

A: Se or selenium comes under carbon family. Selenium is a metalloid(an element intermediate in…

Q: A certain compound is made up of one phosphorus (P) atom, three bromine (Br) atoms, and one oxygen…

A: The given compound contains one phosphorus atom, three chloride atoms and one oxygen atom. The…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.