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

Q: 8. Part 1: Label the parts of this atom (nucleus, protons, electrons, neutrons) nucleus neutrens…

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Q: The element boron absorbs neutrons very effectively, without scattering them very much. In a nuclear…

A: In nuclear fission reactions, the number of neutrons produced are in excess of the neutrons that get…

Q: Name the atom whose frequency is used to define a second

A: The radiation produced by transition between the two hyperfine ground state of caesium has a…

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: 3. Tungesten-184 emits an alpha particle and the new nucleus formed is: Rehinuim-188 Iridium-184 O…

A: If an alpha particle is formed, the mass of the parent element decreases by 4. Hence, 184 must be…

Q: F (N) 4 3 t (s) ol 1 2 3 4 5

A: Given,  Mass of the particle, m = 2.15 kg

Q: A radioactive material has a half-life of 20 days. A sample of the material contains 8.0 × 101°…

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Q: Elements that appear in the same column of the periodic table often share similar chemical…

A: "According to Bartleby guidelines for multiple question we can answer only one question. So, repost…

Q: hoose an isotope and describe its radioactive decay process and how it is used. Write a minimum of…

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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: Match the nuclei described below with their corresponding isotope names.

A: Number of Nucleons =no. Of proton + no. Of Neutron This is helpful to find the matching isotope.

Q: A microwave oven may: Group of answer choices make food radioactive. emit x-ray. heat up body…

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Q: An isotope of iodine 1311, which has an eight-day half-life, is used in nuclear medicine. A sample…

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Q: The half life iodine-131 is 10 days. What fraction will be left after 30 days if the original mass…

A: Given that, The half-life iodine-131 is 10 days, T1/2 = 10 days The formula for the half-life is…

Q: Nuclear fission can occur in O hadrons. O plutonium. quarks. O deuterium. X

A: In nuclear fission a heavy atom splits in to two or two or more daughter nuclei .  In plutonium…

Q: A radioactive element has an original mass of 150 grams. How much would be left in the parent atom…

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Q: 4 photon and an electron have equal energy E. Aphoton/^ectron IS proportional to a) VE -) 1/E d)…

A: Suppose the wavelengths of photon and electron are (λphoton) & (λelectron) respectively.…

Q: Name three different types of evidence for the existence of atoms.

A: Following are the three different type of evidence that proves the existence of the atoms.…

Q: After 40 years, an original sample of 100 kg has decayed to 25 kg. What is this material's…

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Q: Which element's isotope is often used to treat cancer patients?

A: The correct option is cobalt Cobalt therapy or cobalt -60 therapy is the medical use of gamma rays…

Q: The activity of a radioactive element falls from 600 s1 to 500 s1 in 40 minutes. The half-life of…

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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: Select one or more: a. The model suggested presence of electrons orbiting the heavy nucleus. b. The…

A: Bohr model suggested presence of electrons orbiting the heavy nucleus in that orbit which is…

Q: Which isotope of hydrogen—deuterium or tritium—is abundant and which is scarce?

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Q: 32) X- rays are produced by: 1 Acceleration of fast moving electrons 2. The drooping of electrons…

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Q: Aston's measurements with mass spectrograph showed that the mass of the carbon-12 nucleus _the mass…

A: We have, One carbon nucleus  And 12 hydrogen nuclei

Q: In a radioactive substance at t = 0, the number of atom is 8 x 104 . its half-life period is 3 yr.…

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Q: Choose the BEST answer to the following. When a nucleus of uranium-238 emits an alpha particle, left…

A: Uranium-238 follows the following decay equation,

Q: How many neutrons are in the nucleus of the atom 17 9 F

A: Given mass number is 17. Given atomic number is 9.

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: An element with an atomic mass of 57 has an isotope with an atomic of mass 58. The source of this…

A: Isotope is a terminology given to an element that has variation in atomic mass than the same element…

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: The half-life of Carbon-14 is 11 years. How much of an initial 102 g sample will remain after 49…

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Q: The original number of atoms in a sample of a radioactive element is 4.00x10-0 . Find the time it…

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Q: High temperatures are required for controlled nuclear fusion because nuclei must O produce…

A: The Correct Answer is (b)

Q: Elements that appear in the same column of the periodic table often share similar chemical…

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Q: radioactive substance is known to have a half-life of 78 years. Calculate the number of years it…

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Q: Boron has two naturally occurring isotopes, boron-10, and boron-11. Boron-10 has a mass of 10.0129…

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Q: What did Rutherford discover about the atomic nucleus?

A: The alpha scattering experiment conducted by Rutherford lead to the discovery of atomic nucleus.

Q: Elements that appear in the same column of the periodic table often share similar chemical…

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Q: Please describe Rutherford planetary model of atom (3-4 short sentences).

A: This model describes that an atom is a dense,  tiny, and positively charge core i.e. nucleus in…

Q: 4. Alpha particle bombarded of nitrogen-14 to produce a proton and oxygen-17 5. Neutron bombardment…

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Q: Select statements that apply to the Rutherford model. Select one or more: a. The model suggested…

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Q: a Atom X and atom Y have the same mass number, but they have different atomic numbers. Are they…

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

A: During the radioactive process of Thorium  the 220Rn is the natural decay product of the most stable…

Q: Where do the transition elements appear on the periodic table?

A: There are 18 groups and 7 periods in the periodic table in which all elements are arranged in order…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.