FIGURE 30.9 Nuclear energy-level diagrams of 1?C, 1²B, and 12N. A 2C nucleus is in its lowest possible energy state. Energy 2 2 4 4- Neutrons Protons Maximum numbers of neutrons and protons in each level A l'B nucleus could lower its energy if a neutron could turn into a proton. Energy 2 2 4 4 2 Neutrons Protons A 12N nucleus could lower its energy if a proton could turn into a neutron. Energy 12N 2. 4 4 2 Neutrons Protons

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

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Q: Determine the charge and made of nuclei in amu made up of the following: 6 protons and 6 neutrons…

A: 1) The nuclei is having 6 protons and 6 neutrons Since the charge of proton is +1 and charge on…

Q: Among these numbers, If each atom acquired two more neutrons, what element would each of these be?…

A: There are basically 3 sub-particles present in an atom-  1- electron 2- proton 3- neutron

Q: Why is the isotope 1Ci radioactive while 35Cl and 37Cl are not? Elements with an number of protons…

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Q: She discovered two new elements and received two Nobel Prizes, one in chemistry and one in physics.…

A: Marie Curie was first woman to win noble prize. She discovered two elements radium and polonium

Q: What is radioactive decay? A.theprocess by which an atom of an unstable element can gain stability…

A: The spontaneous emission of radiation from an element is called radioactivity. The elements which…

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

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Q: In _______, a negatively charged electron is ejected from the unstable nucleus, converting a neutron…

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

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Q: Write Chlorine-35 and Chlorine-37 in isotope notation.

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Q: mb208675 Al changes saved 2. Use the band of stability to determine if europium-154 is a stable or…

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Q: Which of the following are isotopes? Atom or ion AQR MGEL # of electrons 5 9 18 28 36 59 # of…

A: Isotope are having same number of protons differ in number of neutrons

Q: The mass of a protan is 1.00728 amd and thad ofa neutron is. 1.00817 amu. What is Co mideus? IThe…

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

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Q: 1.) The energy change in a chemical reaction comes from a change in mass. Calculate the mass change…

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Q: greatest number of stable isotopes? Ne, F, Na

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Q: The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to…

A: Given  For Co - 65    n/p     = 1.41  Changes if this ratio is reduced = ?

Q: If an isotope has 90 protons, how many neutrons are required in order for it to have a stable atomic…

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Q: Which of the following characterizes an alpha ray? Choose all that apply. carries a positive charge…

A: Alpha particals are same as helium containing two proton and two neutron.

Q: H-2 is a stable atom. However, H-3 is a radioactive element. Give the reason.

A: Hydrogen (Z=1) element having  three Isotopes named as Hydrogen, deuterium and tritium.

Q: The last “missing” element from the first six periods waspromethium, which was finally discovered in…

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Q: ACTIVITY # 5 DIRECTIONS: COMPLETE THE TABLE: Element or lon Atomic umber Mass Number of Protons of…

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Q: which particle corresponds to isotope 3? 183Mt, 183W, or 109W

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Q: Find the number of electrons and neutrons in the following:  195Pt+2…

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Q: How much energy must be supplied to break a single aluminum-27 nucleus into separated protons and…

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Q: We must first calculate the mass defect (Am) for 56F.. Since atomic masses (which include the…

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Q: Write the nuclear symbols of the three isotopes of an element with an atomic number of 8 in which…

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

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

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Q: We must first calculate the mass defect (Am) for 56Fe. Since atomic masses (which include the…

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Q: Visited (Atomic masses: iron-56 = 55.9349 amu; hydrogen-1 = 1.0078 amu; mass of neutron = 1.0087…

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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: Atomic structure and Mass r which iso to pee in each pair contains mone neutrons? a chlorine - 35 or…

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Q: Derive a formula for the atomic number of the most stable isotope of a given A and use it to find…

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Q: Which sub-atomic particles are part of the nucleus? Protons Lions Axons Electrons Neutrons

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Q: when the proton number of the nucleus exceeds 60 the nucleus show the tendency to be unstable?…

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Q: In the equation, below, which disintegration product in the radioactive decay of carbon-14 results…

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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.