m. 29Cu + on → 63, 64

Q: 13. How should the angle of deflection of an a particle by a nucleus vary with the closeness of the…

A:

Q: I of the following statements are true EXCEPT O nuclear fission evolves more energy than nuclear…

A:

Q: The discovery that uranium emitted invisible rays was made accidentally. O True O False

A: The answer is given as follows Uranium was discovered in 1789 by Martin Klaproth, a German chemist,…

Q: The radioactive element carbon 14 has a 1/2 life of 5750 years a scientist determined that the bones…

A: let assume the initial concentration of C-14 as Co=100%

Q: What is the primary factor that determines whether an nucleus is stable or unstable?

A: The nucleus is the small region that lies at the center of an atom. It is discovered in 1911 by…

Q: Ernest Rutherford (the first New Zealander to be awarded the Nobel Prize in Chemistry) demonstrated…

A: I am solving only first three parts of the question as per the guidelines.

Q: beryllium has a nucleus composed of protons and neutrons. Given the data, how many protons are in a…

A: Beryllium (Be) is an element with group number 2 and period number 2.  The atomic number (Z) of…

Q: Which of the following lead to the discovery of an electron? O Cathode Ray Tube Perforated Cathode…

A: Electrons are negatively charged particles present in atoms that revolve around the positively…

Q: The radioactive element carbon 14 has a 1/2 life of 5750 years a scientist determined that the bones…

A: According to the question, the radioactive element C has half life of 5750 years.  Lost percentage…

Q: Given the only naturally occurring isotope of aluminum is Al-27, determine its mass from the…

A: Isotopes of an element are the ones which have the same atomic number but different mass number.…

Q: Compare the doses from natural radioactivity with radiation. Natural radioactivity and its…

A: Natural radioactivity is a phenomenon that occurs when unstable atomic nuclei decay and emit…

Q: How many protons, neutrons and electons are in 31P3-

A: The element  31P3- It is Phosphorus and having atomic number 15 and atomic mass 31.

Q: Only two isotopes of Sb (antimony, Z=51) are stable. Pick the most likely stable isotope from the…

A:

Q: + 42 He

A:

Q: For the reaction, 3^7 Li (n)4^8 Be, the bombarding particle is, A. proton B. tritium C. positron D.…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: This is the heaviest naturally occurring element  A) 87Fr B) 94Pu C) 92U D) 103Lr E) 102No

A: This is the heaviest naturally occurring element-

Q: What are 3 isotopes of H and how are they different?

A: Naturally occurring hydrogen is known to exist in three isotopic forms which are protium (1H1)…

Q: Q1) Both 60Co and 137Cs emit gamma rays. Which source had the least energetic gamma ray? Justify…

A: When the decay of the radioactive nuclei from higher energy to the lower energy takes place then it…

Q: 3. In your own world, describe what "half-life" means.

A: It can be simply defined as what time taken for the substance to become its half (by mass,by…

Q: Gamma-ray photons have: O no mass and an electric charge of +1 no mass and an electric charge of -1…

A: Gamma rays (γ) are photons.

Q: What was the Copernican revolution? O A. The discovery that the sun was not the center of the…

A: Copernican revolution is about the model of the solar system and was given by a polish astronomer.

Q: p. 5726Fe + on →. + 'on → 5926FE q. r. 5726FE > + °1B

A: During nuclear reaction various types of elements and isotopes are formed due to absorption or…

Q: What is Radiation?

A: Electromagnetic radiations Electromagnetic radiations are the collection of different forms of…

Q: Explain how the cathode ray was discovered.

A: Cathode rays are the beam of electrons that are observed in vacuum tubes. They are also called…

Q: Consider a sample of antimony collected from a different solar system. The sample contained 45.8…

A:

Q: mass of electron

A: Electron is defined as the lightest stable subatomic particle known.

Q: If an atom of Uranium, Element 92, were to absorb an Alpha particle (comprising two protons and two…

A: For a balanced nuclear reaction sum of mass number and sum of atomic numbers must be same on both…

Q: What is a stable isotope of lithium? How many electrons does it have?

A:

Q: The total number of protons and neutrons present in anucleus is known as the ___________.

A: The total number of protons and neutrons present in a nucleus is known as the ___________.

Q: d. 42He +2He > + 42HE → 126C f. 126C + 126C → 10Ne + e. 20 12

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Q: Which pair of words go together?   a. hydrogen, Hiroshima   b. uranium, Nagasaki   c. atomic,…

A: Fusion reaction can be defined as the process in which two lighter atomic nuclei combine together to…

Q: Unstable isotopes are not radioactive. O True O False

A:

Q: Which of the following describes an atom that is not an isotope of the other two? And why a)14p,…

A: Which of the following describes an atom that is not an isotope of the other two?

Q: For Barium-138, determine the nuclear radius and volume of the Barium-138 nucleus

A: It is the size of nucleus on assuming that shape of nucleus is spherical .

Q: Determine the missing element -3516S----à -10e + ?

A: Balanced nuclear equation is the equation in which the sum of subscripts as well as sum of…

Q: How many neutrons are present in P-31 and S-32? Select one: A. 15 and 14 B. 16 and 15 C. 16 and 16…

A: Given that:  Atomic mass of P(phosphorus) = 31 Atomic mass of S(sulphur) = 32 We know, atomic number…

Q: Which of the following is incorrectly matched? neutron : -1 atomic mass unit (amu) neutron : located…

A: A chemical element is made up of atoms, the smallest unit of ordinary matter. Atoms, whether neutral…

Q: Due to a (severe) labeling mistake, you find a sample of C6F14 that may or may not be labeled!…

A: Given :  1. Mass of the sample = 295.111 g. 2. Moles of sample = 0.873 moles of C6F14  Molar mass of…

Q: * Question 31 If you add an additional neutron to an atom, what do you create? A an isotope an ion a…

A:

Q: Click "atomic mass" on the balance. This reading reports the mass of the particle in atomic mass…

A: C-12 has mass of  12 amu C-13 has mass of 13 amu

Q: From the list below, choose the atoms that ONLY have radioactive isotopes. Gold Curium Bismuth…

A: Radioactivity is the property of certain atoms to spontaneously emit particles and/or energy from…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.