Oxygen and hydrogen atoms combine to form water. If the nuclei in a water molecule were fused, what element would be produced?

Q: An atom is composed of a central nucleus which is surrounded by which orbiting particles?

A: Atoms have a central nucleus  that is surrounded by one or more electrons (lightweight negatively…

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: One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium, which…

A: According to theroy of Radioactivitythe decay rate of a nuclei which has initially N0 nuclei  at any…

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: When a uranium nucleus emits an alpha particle, its atomic number

A: The nuclear reaction of Uranium decay is given by: U92238→T90234h+H24e In the above nuclear…

Q: The half-life of 20 kg of Bismuth -210 is 20 minutes. Explain this statement?

A:

Q: Two protons in an atomic nucleus repel each other, but they are also attracted to each other.…

A:

Q: Isotopes of an element contain: A. the same number of protons but different number of neutrons B.…

A: The nucleus of an element consists of protons and neutrons. The electrons don't reside inside the…

Q: Lithium has only two naturally occuring isotopes: lithiumi-6 and lithium-7.  Lithium-6 has a mass of…

A: The atomic mass of lithium can be determined by the following expression.

Q: A mine worker discovers an ore sample containing 500 mg of radioactive material. It was discovered…

A: Given data: Mass of radioactive material, mo=500 mg Number of half-life, n=7 Applying the formula:…

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

A:

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A:

Q: Compared with the energy it takes to separate oxygen and hydrogen from water, how much energy is…

A: According to the principle of conservation of energy, the total energy is always conserved.

Q: The half-life of an element is 20 years. In how many years will there be 12.5% of the initial…

A:

Q: Consider these three nuclei: A. Th-233; B. U-235; C. U-238. From most to least, rank them by the…

A: *A the atomic number of Th-233 is 90. then the number of proton and electron is 90. Number of…

Q: The most common oxygen isotope is °0, but the rarer isotopes O and 10 of this element also exist in…

A:

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: If U-238 splits into two even pieces, and each piece emits an alpha particle, what elements are…

A:

Q: pass

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

Q: A radioactive source has a half-life of 80 s. How long will it take for 7/8 of the source to decay?

A: Given, the half life a radioactive source =80 s we have to calculate the time for 7/8 of the source…

Q: If a pair of carbon atoms were fused, and the product were to emit a beta particle, what element…

A: Given, a pair of carbon atoms were fused and the product emits a beta. Thus there will be an…

Q: State the changes in the values of the mass number and the atomic number of an element, when it…

A: Note : Since there are multiple question and as per guidelines we can provide solution to first…

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

A:

Q: What element spontaneously splits into a lighter nucleus and an even lighter helium nucleus?

A: Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller…

Q: After 90 years, 20 % of a radioactive material decays. What is the half-life?

A: Given data:   Time period, T = 90 years    Decay constant = λ   20% of radioactive material decay…

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

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Q: . One isotope of oxygen has the atomic number 8 and the mass number 18. An atom of this isotope…

A: We know Isotopes have same atomic number (protons number ) but deferent mass number given oxygen has…

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

A:

Q: Energy stored in the nuclei of atoms can be used to generate electricity. O True O False

A: Nuclear energy is the energy in the nucleus, or core, of an atom.  Atoms are tiny units that make up…

Q: For an electrically neutral atom, the number of protons in the nucleus of is equal to the number of…

A: The proton are positively charged and electrons are negatively charge with the equal in magnitude of…

Q: After undergoing alpha decay, an atom of radium 226 becomes____.

A: Given:  Ra - 226  alpha decay

Q: Exactly what is a positively charged hydrogen atom?

A: A positively charged hydrogen atom

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: 12. The half-life of Calcium-47 is 3.91 x 105 seconds. A sample contains 4.11 x 1016 nuclei. How…

A: GivenHalf life of calcium-47, T1/2=3.91×105 sInitially the amount of nuclie, No=4.11×1016

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

A:

Q: Choose the BEST answer to the following. When an element ejects an alpha particle, the mass number…

A: Generally nuclear decay changes the number of protons in the nucleus of an atom and changes the…

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

A:

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

A:

Q: The electrical interaction between the nucleus and the electron is a force of

A: Attraction

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: