Positron emission by Co-55 produces an isotope with what atomic number?

Q: How many neutrons are present in Ne-22?

A: Symbol Ne-22 indicates Neon atom has mass number 22. As we know mass number is the sum of protons…

Q: Iodine-131 undergoes radioactive decay to form anisotope with 54 protons and 77 neutrons. What…

A: Iodine- 131 has atomic number(Z) of 53. Because in a neutral (uncharged) atom, number of…

Q: What are Radioactive Isotopes ?

A: The term isotope is defined as two or more form of the same element which differs in the number of…

Q: Explain how you can predict whether or not an isotope is likely to be stable ifyou know its number…

A: An atom consists of two major parts i.e. re nucleus and electrons. A nucleus is concentrated at the…

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: The mass defect for a neon-22 nucleus is -0.190856 g/mol. Calculate the atomic mass (in u) of…

A: mass defect can never be negative therfore for the calculation the value should taken as positive.

Q: Why is ⁴⁰₂₀Ca the most stable isotope of calcium?

A: The atoms of the same element which have the same atomic number but different mass number are called…

Q: What is another method to track the extent of isotopic decay.

A: Given: Extent of isotopic decay To find: Method that is used to track isotopic decay.  Solution:…

Q: The alpha decay of thorium 234 would produce what daughter isotope?

A:

Q: What isotope is commonly used to determine thyroid activity and treat diseases of the thyroid? A) "C…

A: These days, the use of the radioactive element is commonly used in the treatment of disease. In the…

Q: 2. Use the following isotopes to answer the following 17 F, 135 Cs, 55 214 Po 84 write the nuclear…

A: Nuclear decay reaction: Also called as, Radioactive decay. It is reaction in which Radioactive…

Q: Which radioactive process produces an X-ray? A. Positron Emission B. Electron Capture C. Beta…

A: A form of high energy electromagnetic radiation is known as X- rays. Energy is released in the form…

Q: The radioactive element francium undergoes a series of nuclear decays, eventually forming a stable…

A: Alpha DecayXZA - H24e  → YZ-2A-4          ↓         ∝Beta decaye.g C614   - e-10    → N714

Q: a. Choose an element with at least three stable nuclides. Element name: b. Write the isotope symbols…

A: isotopes are group of atom which have same atomic number but different mass  number due to…

Q: An element X has 195 nucleons and 78 protons, and it undergoes a beta decay. After the decay, how…

A: The atomic number is defined as the number of protons or number of electrons present in an atom,…

Q: In radiometric dating, as the parent atom decreases by 50%, the daughter atom increases by 75%. True…

A: Radiometric dating is used to determine the age of rocks.

Q: During a nuclear decay a 238U atom can break apart into a helium-4 atom and one other atom. Assuming…

A: The property of a nucleus emitting α, β and γ rays is known as radioactivity and the substance…

Q: Nitrogen-14 decays by positron emission to produce what isotope?

A:

Q: Which element is most likely to be radioactive?

A: Radioactivity It is the process by which an unstable atomic nucleus will lose energy through the…

Q: Uranium – 237 undergoes beta emission. Circle the correct resultant nucleus:

A: A beta particle is denoted by: -1   0e

Q: 4623V = ? + 4622Ti What particle would complete the nuclear equation above? a. alpha particle b.…

A: The given above reaction is a nuclear reaction where the vanadium undergoes nuclear decay to give…

Q: Which of these families has only radioactive elements? * > ><

A:

Q: ?→He+ Pu 94 Express your answer as a nuclear symbol. - ΑΣφ ?

A: This is an example of alpha decay since an alpha particle is emitted.

Q: Which type of radioactive decay converts a neutron into a proton?

A: Radioactive decay reaction occurs due to the spontaneous breakdown of atomic nucleus. This process…

Q: What is the daughter nucleus produced when Mn50 undergoes positron emission? Replace each question…

A: We know that; The atomic number of Mn is =25 and we have mass of Mn = 50 It is written as:   M2550n

Q: Question 4 In the balanced nuclear equation for beta emission of Th-234 the atomic number of the…

A: In beta emission, the particles are high energy electrons and these electrons are not attached to…

Q: What is the nuclear symbol for a radioactive isotope of copper with a mass number of 60?

A: The atomic number of copper is 29 and the mass number of radioactive isotope of copper is given as…

Q: What is the nuclear symbol for a proton

A: In the nuclear notation for the element, it is given as:         X: Element Z: Atomic Number =…

Q: 150 decays by positron emission. Balance the nuclear equation by giving the mass number, atomic…

A: • Positron is a fundamental particle having the same mass and same amount of charge as the electron.…

Q: A nucleus Radon-222 decays by alpha emission, forming nucleus A. Nucleus A also decays by alpha…

A: The alpha emission of Radon-222 forming nucleus A is given by  Hence A is 21884Po

Q: Boron-10 is able to absorb neutrons and is therefore used in control rods in nuclear reactors. After…

A: Radioactive decay refers to the breakdown of an unstable nucleus to a stable nucleus with the…

Q: What is the daughter nucleus produced when 188 Hg undergoes positron emission? Replace each question…

A: Emission of positron results into a daughter nuclei , whose atomic number is one less than the…

Q: an alpha particle from Gd−148

A: Alpha decay results in the loss of alpha particles. Alpha particle is essentially a helium nucleus…

Q: True or False: The ratio of unstable isotopes to stable isotopes is part of absolute-age dating.

A: There are two methods of dating: 1) Relative age dating 2) absolute age dating Relative dating- It…

Q: 2. Use the following isotopes to answer the following 17 F, 88 Sr, 135 Cs, 55 100 Sn, 50 214, Po 84…

A: No. of protons and neutrons is as follows: 1)   17F9           p=9           n=8n/p ratio=89…

Q: What is the ratio of density of the nucleus to that of water?

A: The density of a substance is given as  mass per unit volume. i.e density = mass/ volume

Q: What is the difference between a radioactive isotope and a stable isotope? What is the history of…

A:

Q: What’s 0 -1 beta particle?

A: A beta particle is a particle with high-energy emitted by the radioactive decay of an atomic nucleus…

Q: Which of the following describes the reaction: Li + H + ¿Be+ ¿n O beta decay reaction O bombardment…

A: The reaction given is

Q: A radioactive isotope of Radium-226 undergoes an alpha decay, followed by 2 beta decays, then a…

A: 22688Ra is the radioactive isotope .

Q: Consider to isotopes Fe-54 and Fe-56. a. write the nuclear symbol for both isotopes. b. how do…

A: The given isotopes of iron are - Fe-54 and Fe-56 In the given information Fe represent the atomic…

Q: Boron is used in control rods in nuclear power reactors because it is a good neutron absorber. When…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. In…

Q: Polonium-210 undergoes beta decay. Give the notation of the daughter isotope.

A: Polonium-210 undergoes beta decay. Give the notation of the daughter isotope.

Q: The mass defect for a argon-36 nucleus is -0.329292 g/mol. Calculate the atomic mass (in u) of…

A: Here we have to determine the atomic mass of Ar-36 from the following given data , mass…

Q: Which of the statements are true of nuclear reactions? a. The number and types of atoms are the…

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

Q: -14 is an isotope used to perform radioactive dating tests on the complete symbol for this isotope?…

A: Isotopes have same atomic number but different atomic mass.  17) Complete symbol of Americium-241 =…

Q: What are Cathode rays?

A: Given information,      Cathode rays

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.