What fundamental force is responsible for holding together the subatomic particles of an atomic nucleus? A) Gravity B) Electromagnetism C) Weak nuclear force D) Strong nuclear force

Q: Estimate the optimal number of neutrons for a nucleus containing 70 protons.

A: The neutrons and protons, the contents making the nucleus of an atom determine its stability.…

Q: Isotopes are defined as atoms ofa. the same element with different numbers of protons.b. radioactive…

A: Atoms of the same element have the same number of protons, which is also called the atomic number.

Q: Define the term atomic nucleus?

A: Atoms are the building blocks of any matter. The composition of the atomic nucleus gives information…

Q: In 1982, the production of a single atom of 266/109  Mt (meitnerium-266) was reported. Describe the…

A: The given element is meitnerium (Mt). It has mass number equal to 266 and atomic number equal to…

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: For two isotopes Unk-45 and Unk-47 with relative abundance’s of 12.3% and 87.7%, respectively, which…

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Q: Briefly describe the experimental basis for believing that the nucleus occupies a very small…

A: Rutherford had the gold foil experiment where he bombarded alpha particles on a thin sheet of gold…

Q: The atomic masses of nitrogen-14, titanium-48, and xenon-129 are 13.999234 amu, 47.935878 amu, and…

A: Given, the atomic masses of nitrogen-14, titanium-48, and xenon-129 are 13.999234 amu, 47.935878…

Q: stable isotopes, with low atomic numbers, have a N/Z ratio of 1. What does that imply

A: N/Z ratio - It is the ratio of the number of neutrons to the number of protons of the nucleus of an…

Q: onsider two isotopes.  write the nuclear symbol for both isotopes how do they differe from each…

A: The word isotope consists of two words, iso means same and topo means position. It is defined as the…

Q: Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three…

A: An atom consist of proton, neutron and electron

Q: Gallium occurs naturally as 69Ga and 71Ga. Given the mass and abundance of gallium-69 (68.92 amu…

A: Given, Gallium occurs naturally as 69Ga and 71Ga and mass and abundance of gallium-69 is 68.92 amu…

Q: What is the atomic nucleus?

A: An atom is the smallest basic unit of everything in the universe. However an atom have its subatomic…

Q: Another name for an isotope is: Radion Heavy element Positron Transition element

A: Isotopes are compounds that have same atomic number but different mass number.

Q: Calculate the atomic weight of silver, which has two isotopes with the following properties:…

A: Atomic weight: It is the weight that is determined by taking the summation of the atomic mass of all…

Q: True or False? Atomic weight is equal to the number of protons and neutrons in the nucleus.

A: Given : Statement "Atomic weight is equal to the number of protons and neutrons in the nucleus"

Q: What factors have led to changes in atomic mass since 1910?

A: Atomic Mass - It is basically the mass of an atom.

Q: Write the isotopic notation for an isotope that has an atomic number of 35 and a mass number of 81.

A: Given   Atomic Number   = 35    Mass   Number  =  81  Isotopic Notation     = ?

Q: What is the atomic mass of boron-12? A. 13.00335 amu B. 4.00260 amu C. 18.99840 amu D. --…

A: Since boron has atomic number = 5  Hence number of electrons in boron = 5 and to become neutral atom…

Q: A naturally occurring sample of an element contains only twoisotopes. The first isotope has a mass…

A: % of first isotope = 60.11 % Mass of first isotope = 68.9255 amu Mass of second isotope = 70.9247…

Q: What is the charge of the nucleus of element 89?

A: The number of protons corresponds to the charge of the nucleus since Neutrons have no net charge, it…

Q: Magic numbers are associated with protons and neutrons in a nucleus. State the magic numbers for…

A: . There are many factors that give to nuclear stability.  These are,   Full nuclear shell (magic…

Q: A certain element consists of two stable isotopes. The first has an atomic mass of 106.9051 amu and…

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Q: A sample of the element Phosphorus is shown to have a mass of 33 and å charge of -3. HoW many…

A: Neutral Phosphorus having mass 30.9 P having mass 33. Atomic number of P is 15, also atomic number…

Q: A sample of the nonexistent element mythium consists of 25.59% of an isotope with mass number 580,…

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Q: Which of the following statements best describes the role of neutrons in the nucleus? The neutrons…

A: The atom is smallest particle of any element that exists. The atom itself is composed of three…

Q: Provide the correct atomic symbol meeting the following conditions. 1. number of proton = 12 2.…

A: Provide the correct Atomic symbol ---

Q: Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three…

A: 25. Given that : We have to give the proper symbols of the following elements along with their…

Q: The + part of an element is called nucleus. The extranuclear part of the atom contains + charged + .…

A: The question is based on the atomic structure. We have to correctly identify subatomic particles…

Q: From greatest to least, rank them by the number of nucleons in the nucleus. Consider the atoms (a)…

A: In chemistry, the term nucleon can be defined as the subatomic particle which is found in the…

Q: Consider two isotopes Fe-54 and Fe-56, write the nuclear symbol for both isotope. How do they differ…

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Q: Write the isotopic symbol for Lead-206.

A: • We need to write the isotopic symbol for Lead-206

Q: The radius of Uranium-238 nucleus is about 7.44 × 10-3 pm. Calculate the density of the nucleus (in…

A: Given: The radius of uranium-238 =7.44×10-3 pm Atomic mass of uranium = 238 amu

Q: Select all that apply. For each pair of isotopes listed, predict which one is less stable. (a) “Li…

A: The stability of isotopes can be calculated as follows

Q: Mg has three stable isotopes. Given a sample of Mg with the following masses and percent abundances:…

A: Average atomic mass is the ratio of total mass of isotops divided by total abundance.

Q: Which are the three basic parts of the nuclear theory of the atom?

A: The nuclear theory of the atom is given by Rutherford which has the following basic parts. In the…

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: how to rank the isotopes in order of increasing number of neutrons

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

A: Applying concept of n/p rule.

Q: The weight of the hypothetical element Gg is 105.99 amu. Element Gg was found to have 3 stable…

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Q: Isotope 25Mg2+ has: Number of protons Number of neutrons Number of electrons Mass number

A: Given :-  25Mg2+  To calculate :-  number of protons  number of neutrons  number of electrons  mass…

Q: 4 The smallest unit of 5. The nucleus is foun

A: the nucleus is found at the centre of the atom

Q: How can isotopes be used to identify the general region of a person’s place of residence?

A: Every organic and inorganic contains certain stable isotopes in different abundance. Isotope…

Q: Identify for an atom of 96Mo: element name: _____________ Z, atomic number = ____ A, mass number =…

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Q: The average atomic mass of Ga is 69.72. Naturally occurring Ga is composed of Ga-69, which has an…

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Q: Colbalt -61 is used in the medical treatment of cancer. How many neutrons and protons are contained…

A: Given, Cobalt -61 is used in the medical treatment of cancer.we are asked to determine the number of…

Q: You are only given the number of protons 7, and number of neautrons 8. Fill in the rest of the…

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Q: 30. Based on the given data, which of the subatomic particles is the lig Particle Charge Mass (kg)…

A: Atomic number = number of proton, Atomic mass = no. of proton + no.of neutron

Q: Naturally occurring uranium has three isotopes. Calculate the atomic mass of uranium with these…

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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.