1. Indicate the number of protons and neutrons in the following nuclei: (a) Mn, (b) 201Hg, (c) potassium-39.

Q: Describe the forces acting on the particles within a nucleus and explain whyneutrons are the glue…

A: The forces acting on the particles within a nucleus and the reason why neutrons are the glue holding…

Q: How many protons and neutrons are in an atom of Cu-57 ?

A: The number of protons and neutrons in Cu-57 is given below

Q: How many protons, neutrons, and electrons are in an atom of (a) 138Ba, (b) phosphorus-31?

A:

Q: What fraction of the a particles in Rutherford’s gold foil experiment are scattered at large angles?…

A: Given , diameter of gold atom = 2.7 Å  diameter of the nucleus = 1010-4Å

Q: Calculate What is the difference expressed in kilograms between the mass ofa proton and the mass of…

A: Kilogram is the SI unit of mass. Mass of protons is 1.67×10-27Kg. Mass of electrons is…

Q: Determine the number of protons and the number of neutrons in isotope. 147N

A: Protons and neutrons are present in the nucleus and collectively known as nucleons. Protons are…

Q: How many protons, neutrons,and electrons are there in an atom of (a) 10 5B, (b) 36Ar, (c) 8538Sr,…

A: An atom consists of sub-atomic particles which are protons, neutrons (both present inside the…

Q: ilver is composed of two naturally occurring isotopes: Ag-107 (51.839%) and Ag-109. The ratio of the…

A: First calculate the percent abundance of Ag-109.

Q: The cobaltisotope(t1 / 2 = 5.28yr) C^60is produced at a rate of 10 ^ 12atom / sec for a period of…

A: Given that, t1/2 = 5.28 year = (5.28×365×24×3600) s Hence, disintegration constant = λ =…

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: What is the change in mass of 180 Ta when it is formed from protons, electrons and neutrons if the…

A:

Q: What is the number of neutrons in I-131?

A: Given, Element : I-131 Number of neutrons = ? Note: In the modern periodic table, iodine (I) belongs…

Q: Besides number of neutrons, what else do isotopes of the same element have that is different?

A: Isotopes are the variation of chemical elements that have the same number of protons but a different…

Q: What can you say about the number of neutrons in the stable isotopes of fluorine, sodium, aluminum,…

A:

Q: How many protons, neutrons and electrons are present in an atom of 40Ca and 119Sn ?

A: The atoms considered are 40Ca and 119Sn.

Q: how do I figure out how many protons and neutrons in Zinc-67?

A: Atomic number (Z) is defined as number of protons present in an atom.  In a neutral atom number of…

Q: Why was it more difficult to discover neutrons than protons or electrons?

A: Neutrons was discovered by James Chadwick in 1932, after the discovery of electrons and protons.

Q: How many protons are contained in a circular puddle of liquid mercury that is 6.25 inches wide and…

A: In the given question we have to calculate the number of proton contained in a circular puddle of…

Q: The radioactive nuclide with the symbol 75Se is used to measure the shape of the pancreas. What is…

A: The atomic number of Se is 34 and the mass number of this radioactive nuclide of Se is 75. Atomic…

Q: Determine the number of protons and the number of neutrons in isotope. 2311Na

A: The number of protons and the number of neutrons in isotope 2311Na can be identified as, Atomic…

Q: There are two naturally occurring isotopes of B- boron. One has an atomic mass of 10.013 amu and a…

A:

Q: కా 1. Indi cate the number of protons and neutrons in the following nuclei: c) Dotassium - 39

A: Atomic number = number of protons Mass number = number of neutrons + number of protons If atom is…

Q: Fill in the information missing from this table. nuclide protons neutrons Z A 0 0 33 75 0 0 12 14 0…

A:

Q: An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of?

A: Given, Number of protons = 19 Number of electrons = 19 Number of neutrons = 20

Q: In which of the following nuclear reactions, X represents a neutron? p indicates a proton. It is…

A:

Q: 5. Write an equation that relates mass number to the number of protons, and neutrons. BIU E E E E ®…

A: for a given element X, XZA A is the mass number Z is the atomic number

Q: If a sample of gallium contains 1.56×104 atoms of gallium-69 and 1.02×104 atoms of gallium-71, what…

A: Given,1.56×104 atoms of gallium 69.1.02×104 atoms of gallium 71.

Q: 13) How many neutrons are in carbon-12 ? A) 7 B) 8 C) 6 14) Identify the chalcogen that has 18…

A:

Q: The mass of a single atom of iron-56 is 55.93494 amu. Why is this number different from the mass of…

A: Knowledge of an atom's mass is important in chemical calculations, but the mass of a single atom in…

Q: Which of the following has the greatest number of neutrons? O antimony-123 O tin-121 55 Fe 26 O the…

A: We know that ; Atomic number of element is equal to the number of protons in the element . ( Atomic…

Q: If a sample of silver contains 1.29×104 atoms of silver-107 and 1.20×104 atoms of silver-109, what…

A: The percentage of silver-109 in the sample can be calculated by using the formula Percentage of…

Q: How many protons and neutrons are present in 118Sn4+?

A:

Q: Calculate the number of protons neutrons and electrons in 84Kr36

A: The below points should be kept in mind always to solve this type of problem. The mass number is the…

Q: How many protons are in 2.08 x 10-21 g of F?

A: Atomic weight of F = 19 Given is Mass of F= 2.08 x 10-21 g Number of moles= given mass/ molar mass…

Q: How many protons and neutrons are in the nucleus of Kr-80?

A:

Q: Determine the number of protons and the number of neutrons in isotope. 1940K

A: For any element, we can represent  it in stand form as XAZ where X resents the symbol of the…

Q: There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%,…

A: The mass number of Silicon = 30

Q: Determine the number of protons and the number of neutrons in isotope. 226Ra88

A: 226Ra88 is the isotope of Radon. Now, how to determine number of protons and number of neutrons.…

Q: Determine the number of protons and the number of neutrons in isotope. 22286Rn

A: An element consists of same type of atoms. An atom is composed of certain sub-atomic particles;…

Q: The mole is defined as the amount of a substance containing the same number of particles as exactly…

A: An isotope is the chemical element that has same number of protons in the nucleus having same atomic…

Q: 130TE2 number of protons number of neutrons number of electrons number of nucleons

A: The symbol of the element Tellurium represented as130Te522- In the above symbol 52 is the atomic…

Q: if a particle has a mass 5.7661x10^-28 kg, what would its mass be in amu?

A:

Q: What would be the approximate mass of a particle that has 48 electrons, 46 neutrons and 52 protons?

A: No of electrons = 48 No of neutrons = 46 No of protons = 52

Q: Determine the nuclear composition (number of protons and neutrons) of the following isotopes. (d)…

A: The number of protons in the element = Atomic number of element And the number of neutrons in the…

Q: How many protons and neutrons are in the element that has A= 40 and Z= 18?

A: For a neutral atom the atomic number of the element represent the no. of protons present in the…

Q: How many protons are there in the nucleus of Cu-64?

A: Atomic number (Z) is defined as number of protons present in an atom.  In a neutral atom number of…

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.