2. Add a neutron to the Carbon-12 nucleus. Observe how the mass number changes. Which particle(s) is/are counted in the mass number?

Q: What is an Atomic Number?

A: Atomic number  It is represented by the symbol Z. It is the number of protons present in the nucleus…

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

A:

Q: Approximately how many times greater is the diameterof an atom than the diameter of its nucleus?…

A: Atoms are bigger in size and in the center of the atom nucleus is present.

Q: Identify the three subatomic particles

A: Atom is the smallest unit of matter. It is an indivisible particle.

Q: When does the number of Neutrons vary?

A: An atom consits of the electron,proton and neutron. The atomic mass of the atom depends upon the…

Q: Explain the difference between Z (the atomic number) and A (the mass number)?

A: Concept introduction: Atomic number and mass number are the basic properties of element. An atom…

Q: Differentiate between the mass number and the atomic number?

A: Mass number (A)- the number of protons(p) and neutrons(n) present in an atom of element called as…

Q: A neutron and a proton combine to form a nucleus why does the mass. Of the nucleus differ from the…

A: Given: A neutron and a proton combine to form a nucleus. And the mass of the nucleus differ from the…

Q: Define mass number

A: Solution- Mass number - The sum of the Neutrons and protons present in the an atom is called mass…

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: neutrons/cm2.s), calculate the number of neutrons captured per second by 1.0 cm-2 of the

A:

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

A:

Q: What subatomic particles will be found in the nucleus of an atom ?

A:

Q: Which two atoms are isotopes of one another? Atom #p* # n° #e A 10 8 B 10 9 10 9. D 11 A) A-B B) B-C…

A: Given, Atom no. of protons no. of neutrons no. of electrons A 8 10 8 B 10 9 10 C 9 9 9 D…

Q: Explain how isotopes are produced by changing the relative number of specific subatomic particles

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

Q: What is an atomic mass unit? Why is it necessary to introduce such a unit?

A: Matters are the substances that possess some mass and volume. These are formed by joining very small…

Q: Which particles account for most of an atom’s mass?

A: Atoms are the fundamental unit of matter consisting of neutrons, protons and electrons.

Q: A helium nucleus has two protons and two neutrons. How many electrons does it take to equal the mass…

A:

Q: The isotope with 15 protons and 14 neutrons is? The isotope with 9 protons and 8 neutrons is? The…

A: As we know, Mass number of an atom = number of protons +the number of neutrons Atomic Number of an…

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: What is atomic mass? How is it calculated?

A: Atoms are the smallest constituents of a chemical compound and the atoms do not have independent…

Q: An Se atom has a mass number of 78. How many neutrons does it have?

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: What is the difference between protons and neutrons?

A: We have to write the difference between protons and neutrons.

Q: The isotope of Nitrogen with a mass of 15amu is written as _? The isotope of Uranium with a mass of…

A:

Q: Describe how the atomic and mass numbers change, with at least one specific example?

A: An atom has a nucleus situated at the center and the electrons are surrounding it. The nucleus has…

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: ? + 4Ni→7Rg+¿n Express your answer as an isotope or a particle. 28

A: In a balanced nuclear reaction, number of protons and number of neutrons on either side of the…

Q: An isotope with atomic number 64 and mass number 158 is found to have a mass ratio relative to that…

A: Given An isotope has an atomic number of 64 and mass number of 158 It has a mass ratio of 13.16034…

Q: An isotope of uranium is 238U. How many protons, neutrons and electrons are in this isotope?

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

Q: What is the mass number for an atom of osmium containing 76 protons and 112 neutrons?

A: The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of…

Q: On the fictional planet Zeus, boron occurs as 55.46% of 10B (atomic mass = 10.01 u) and 44.54% of…

A:

Q: The isotope of plutonium used for nuclear fission is 239Pu.Determine (a) the ratio of the number of…

A: Concept Introduction: The atomic number is equal to the number of protons and number of electrons…

Q: What is the mass number of an isotope?

A: Isotopes are those atoms which having same elements and they are having protons of same number and…

Q: Why are atoms, neutrons, and protons not considered elementary particles? and why is electrons…

A: Atoms are the basic building blocks of any element.

Q: What I still pass 15 protons 15 electrons and 17 neutrons?

A: Isotope:

Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.63%. Now…

A:

Q: Calculate the mass in grams of 1 mole of neutrons given the following conversion factors: 1 n° =…

A: Consider the given information is as follows; 1 n0 = 1.008665 amu1 amu = 1.660538×10-24 g1 mole =…

Q: Determine the number of protons and neutrons in 41/20 Ca?   Number of Protons  Number of Neutrons…

A: Atom contains protons, electrons and neutrons.  Protons are positively charged and electrons are…

Q: If you wanted to change the mass number in the simulation, changing the number of which particle or…

A: Mass Number is considered to be the Atomic Mass of an element.

Q: What particles comprise the charge of the nucleus?

A: To find : What particles comprise the charge of the nucleus.

Q: Give the number of protons and neutrons in the nucleus of boron-11

A: The number of protons and neutrons in the nucleus of boron-11 is to be determined.

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: 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…

Q: Consider 39K,   a The mass number (A) is 39  b The atomic number (Z) is 39  c Blank  d The atomic…

A: Representation of an element: XZA X = symbol of element Z = atomic number of element A = atomic mass…