In chemistry when something is reduced it means that it has ________.   gained an electron   lost an electron   gotten smaller in size   gotten bigger in size   moved down a concentration gradien

Q: 7. Which two metals do magnets attract or repel? a. Gold and silver b. Platinum and titanium c. Iron…

A: Given statement is :  Which two metals do magnets attract or repel ?  Options are :  a. Gold and…

Q: All atoms are mostly ______ with the nucleus having a net charge of  _________.    A. empty space,…

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Q: Consider the redox equation. NO + H₂SnO3 → H₂O + Sn + HNO3 1. The atom that gained electron/s is…

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Q: Explain the following A. Energy level B.orbital C.Sublevel

A: A. An energy level represents the 3-dimensional space surrounding the nucleus where electrons are…

Q: Which atom has 2 electrons in its 2p orbitals? Question 7 options: C Si Li He

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Q: How much energy is required to raise the temperature of 14.6 grams of gaseous krypton from 21.8 °C…

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Q: in an atom the positive ______ is attracted to a negative ______ Answer choices: proton, neutron,…

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Q: 2. Determine how many different fluorine environments are present in each molecule or ion assuming a…

A: Nuclear transition refers to the process in which an atomic nucleus changes from one energy state to…

Q: 8. Most elements on the periodic table at 25°C and 1 atm are (choose all that apply) a. conductors…

A: All the chemical elements of the periodic table can be broadly divided into three categories,…

Q: An electron far from the nucleus in a chemical bond will gain kinetic energy as it moves towards the…

A: In most of the cases, for a stable chemical compound, energy is supplied to decompose the chemical…

Q: Are these in order of highest energy to lowest energy? What would be that order?

A: As in the energy Diagram, the larger the hump ,more is the energy. As in eclipse-1 f have bulky…

Q: The ion with the smallest diameter is Br CI F 02- 00

A: The ionic species given are Br–, Cl–, F–, O2–.

Q: What is the number of electrons of the given element?

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Q: 1. What is the energy in Cal unit of one photon of microwave radiation with a wavelength of 550nm?…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: What energy in kilojoules per mole are associated with this frequency (4.37 x 10^14 Hz)?  A. 2.91 x…

A: Energy is related to the frequency by the relation E=hν where E=Energy of the wave or particle…

Q: Give the three isotopes of hydrogen and their uses

A: Isotopes elements having same atomic number but different mass number

Q: Which of the following elements would have the highest ionization energy?

A: According to definition ionization energy is the amount of energy required to remove the outer most…

Q: What is anode used for in Transmission Electron Microscope (TEM)? O Move electron beam during…

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Q: How does an electron move to a higher energy level?

A: When an electron moves from a lower energy shell to higher energy shell then it means that the…

Q: What is the symbol of the most common Atom found in the atmosphere

A: Nitrogen is found in the atomosphere mostly  Which is 78%  And symbol is N2

Q: the number of electrons in the highest energy level of carbon is Group of answer choices 1 2 3 4 5

A: The element given is carbon.

Q: Which elements and properties did Mendeleev examine when he predicted the properties of eka-aluminum…

A: In Mendeleev’s periodic table elements are arranged in the increasing order of their atomic mass.…

Q: How many moles of photons with a wavelength of 679 nm would need to strike a material in order for…

A: The energy associated with one mole of photon is given as:

Q: What chemical reaction happens when green dye changes to blue when expose to air?

A: when green dye changes to blue when expose to sir a chemical reaction happens that is redox…

Q: 4. Explain why hydrogen only absorbs or emits certain wavelengths of light. 5. Draw an emission…

A: Explanation of why hydrogen atom only absorbs or emits certain wavelength of light.

Q: What do you call a process in atomic spectroscopy in which the sample is volatilized and decomposed…

A: Correct option: B Atomization Explanation:  1) Atomic spectroscopy is used to the determination of…

Q: Q3. What volume of 8 M sulfuric acid must be used to prepare 1.5 Lof a 0.10 M H,So, solution? A.…

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Q: Which color of visible light has the longest wavelength?  A. Red  B. Yellow  C. Blue D. Violet

A: Relative wavelength and color: Violet < Indigo < Blue < Green < Yellow < Orange <…

Q: 18. Which is larger: an atom of Rb or an atom of I? Explain your choice. (See note above.)

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Q: If atom X has an atomic number of 74, it would have _____.   Select one: a. 74 protons and roughly…

A: The atomic number of a chemical element is the number of protons in the nucleus of an atom of an…

Q: What is the 29th element in group 11

A: Group 11 of the periodic table is known as the coinage metals group, which includes:1. Copper (Cu)2.…

Q: Answer

A: Dear student I have given answer to your question in the image format.

Q: Which element has the largest atomic radius? explain your answer in a separate sheet. O H O F O Na

A: Given :- symbol of elements H, F, Na and O  To identify :- element with largest atomic radius

Q: Without any additional interactions, an excited atom will   a. drop to a lower energy level.   b.…

A: When an atom absorbs a photon energy and gets excited.

Q: The most intense line in a hydrogen glow-discharge plasma is the alpha-H line at 656 nm. What is…

A: Wavelength of the most intense line in a hydrogen glow-discharge plasma is 656 nm .We have to…

Q: Spectroscopy is the use of electromagnetic radiation to investigate   Question 1 options: A how a…

A: A question based on spectroscopy, which is to be accomplished.

Q: Magnesium has 12 protons. How many electrons are in its second energy level? O 1. two O 2. four 3.…

A: Different energy levels in the atom correspond to the different principal quantum number values (n)…

Q: There are 17 Rare Earth Elements. Pick any 5 of them, and for EACH of the 5, explain in detail why…

A: Rare earth elements are a group of seventeen chemical elements that occur together in the periodic…

Q: When an atom in an excited state changes to the ground state it:   a. releases energy   b. gains…

A: When an atom in an excited state changes to the ground state it:

Q: how are the different colors produced including specific examples. Topic: fireworks

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: All metallic elements are solid at room temperature except _________. A. sodium B. calcium C.…

A: At room temperature, mercury is not at solid state. Mercury is  liquid above 0°C Temperature This is…

Q: ron 54 Chemistry/Cor cans used for canning food are usually coated with tin instead of zinc. This is…

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Q: 8. Why do think elements give off colors? Use what you know about what happensJNSIDE an you atom. 9.…

A: Detail of spectral lines and flame test explanation is given below.