What gas was "emanation" from thorium, discovered by Ernest Rutherford? radium radon oxygen O xenon

Q: Which of the following is the currently accepted model ofthe atom?(a) The plum-pudding model.(b) The…

A: Introduction: An atomic model is a guide to represent an atom and it is used to understand the…

Q: Fill in the nine gaps in this table. Element symbol Zn Protons 28 Neutrons 34…

A: in the neutral atom, no. of protons= no. of electron Mass no. = No. of proton + no. of neutron

Q: Thorium is often cited as a much safer material for generation of power using a nuclear reactor.…

A: Solution: Yes, Thorium is often cited as a much safer material for generation of power using a…

Q: A neutral atom of the element potassium (K) has A 19 protons. B. 20 neutrons. C. 39 electrons. 58…

A: No.of protons in an atom is determined by atomic number of that atom .

Q: ') The Bohr model of an atom explains the physical behavior of an atom through three hypotheses.…

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Q: The half-life of Radium-223 is 11.4 days. If 160 grams of Radium-223 is initially present. How much…

A: Given data: Half life (T1/2) = 11.4 day Mass of radium initially present (N0) = 160 g Time (t) = 57…

Q: Prove that alpha radiation is the emission of a helium nucleus.

A: Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha…

Q: Select all of the following statements that are basic assumptions of the Bohr model of the atom.…

A: A) Atoms have a central nucleus with electrons in orbit about this nucleus. C) Electrons orbit…

Q: Element Sodium Potassium Strontium Calcium Magnesium Strontium Mercury Arsenic Color

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Q: The first scientist who was able to separate two isotopes of neon was O Henry Noseley Marie Curie…

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Q: 6. The particles in the nucleus that have a positive charge are the b. neutrons a. electrons c.…

A: Part (6):Introduction: There are three fundamentals particles are present in the atom electrons,…

Q: What is the number of protons, neutrons, and electrons for element has; atomic number 9, mass number…

A: The given problem is based on atomic physic, To solve the given problem we will define the mass…

Q: Element symbol Mg Protons 10 Neutrons 12 Electrons 11 Mass number 24 23 00

A: A table with some missing values is given Let's find those missing values

Q: Bohr's hydrogen atom is one of the successful theories in modern physics in explaining the behavior…

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Q: What does the following element description actually mean? Na +1 A. Sodium atom with 12 protons, 11…

A: The periodic table tells us that sodium atom (Na) has an Atomic Number of 11, so there are 11…

Q: The term photon refers to: A) light ray B) sub atomic particle C) radiation D) None of the above

A: The term photon refers to sub atomic particle.

Q: 4. Actinium-227 emits a beta 5. Th-227 emits an alpha and a gamma 6. Ra-223 emits an alpha

A: Given:Actinium-227Thorium-227Radium-223To Find:Nuclear equation of each

Q: QUESTION 7 was the first to make a theoretical model of the nucleus using the idea of a liquid drop.…

A: answer :-  Niels bohr was the first to make a theoretical model of the nucleus using the idea of a…

Q: check all that are found in the nucleus of an atom neutron proton electron

A: The nucleus of an atom is positively charged. An atom consist of electron proton and neutrons so the…

Q: pass

A: Half-life is used to measure the decay rate of the radioactive isotope. One half-life is said to…

Q: What subatomic particle was used by Enrico Fermi in reactions of bombardments O a-particle O…

A: In 1934 Italian physicist Enrico Fermi started bombarding elements with neutrons instead of protons…

Q: What is another way to write the isotope listed below? 239 Pu 94 Plutonium-333 Plutonium-145…

A: Definition of isopotes -  Two form of same element with different number of neutrons but same number…

Q: What is a radioactive isotope

A: Required : What are radioactive isotopes.

Q: Which element is the primary fuel used to generate electricity using nuclear energy? O coal O…

A: Uranium is the primary fuel which is most widely used to produce nuclear energy.

Q: The half-life of Unobtanium-118 is 3 days. How many days pass for 800 grams of this element to be…

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Q: Which atomic picture (named after the respective physicists) gives the most complete and accurate…

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Q: 15. If neon-20 captures an alpha particle, find the following for the product: i) the name of the…

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

Q: Explain the structure of the atom in general

A: Solution

Q: Radiation technology in industry is used to coat wood.  The rays used for coating wood are .... a.…

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Q: When was element Plutonium discovered? O 1935 O 1943 O 1941 O 1940

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Q: Becquerel's discovery of radiation from uranium salts was important in that: It confirmed that both…

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Q: In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the…

A: An alpha particle is a radioactive particle that has an atomic number of 2 and a mass number of 4.…

Q: Who was the leader of team of scientists and engineers that built first man-made nuclear reactor?…

A: The first man made controlled nuclear reactor was made in the university of Chicago in 1942 , under…

Q: The nucleus of an atom emits a high energy electromagnetic wave. This nucleus has probably changed…

A: When a nucleus emmits a radiation of high energy electromagnetic wave then then it transformers to a…

Q: There is a safe level of radioactive carbon dioxide on earth and inside your body because of: a. UV…

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Q: John Dalton's argument that atom exist was based on his discovery of the new elements O the law of…

A: Correct option is (b) i e the law of multiple proportions .

Q: Radioactivity is a process that occurs: a. In the electronic shells of atoms. b. In the nuclei of…

A: The correct answer is option (b).

Q: Write the appropriate symbol (with A, Z and the element symbol) for an yttrium isotope that has 39…

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Q: Define the term deuterium?

A: Deuterium is also called the heavy hydrogen. The symbolic representation of deuterium is D or 2H.

Q: Which of the following statements regarding the Rutherford model of the atom is correct? O The…

A: Rutherford model: On 1909, Sir Earnest Rutherford devised and performed an famous experiment called…

Q: Energy stored in the nucleus of an atom is called: A) Nuclear energy B) Atomic energy C) Potential…

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