A se atom has a mass number 78. Determine the number of neutrons, electrons and protons in this neutral isotope.

Q: Calculate the number of protons, electrons, and neutrons if the mass number is 82 and the atomic…

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Q: What is the charge for an atom that has 28 protons, 28 electrons, and 30 neutrons?

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Q: What is the charge of an ion that contains 21 protons and 19 electrons?

A: For any neutral atom, the number of electrons present in the atomic shells is equal to the number of…

Q: What is the mass number of an ion with 106 electrons, 159 neutrons, and a +1 charge? Express your…

A: Since it is an ion, the number of electrons is calculated with the expression given below in which…

Q: The atomic number of nitrogen is 7. What is the mass number of a nitrogen atom with 6 neutrons?

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Q: A common isotope of Li has a mass number of 7. The atomic number of Li is 3. How can this…

A: The lithium atom has atomic number three, and the number of protons in the nucleus of lithium is…

Q: Consider the following atoms in which X represents the chemical symbol of the element:11/22X,…

A: In an atom of the element, there is a nucleus present in the center.  protons and neutrons are…

Q: Which symbol represents the atom having 28 protons and 34 neutrons in its nucleus?

A: Atomic number: The atomic number (represented by the letter Z) of an element is the number of…

Q: 3 major subatomic particles that make up an atom

A: Earlier it was believed that an atom is the smallest particle that is the building block of…

Q: An atom has a mass of 52 amu and 24 electrons. How many neutrons are in this atom?

A: Neutron is a subatomic particle which do not contains any charge and is neutral. It is denoted by…

Q: What is the mass number of an atom that contains a. 42 protons, 42 electrons, and 53 neutrons? b. 24…

A: a. 42 protons, 42 electrons, and 53 neutrons? b. 24 protons, 24 electrons, and 28 neutrons? To find…

Q: Describe the general arrangement of subatomic particles in the atom?

A: The arrangement of subatomic particles (electrons, protons, neutrons) in atom:Atom is the basic unit…

Q: Determine the subatomic particles for Si4- (the mass number remains at 29 amu, think about which…

A: The charge changed but the mass number did not changed. This is possible by emission of positron.…

Q: Which statement about subatomic particles are true? Electrons are much lighter than neutrons.

A: Subatomic particles include electrons, the negatively charged, almost massless particles that…

Q: Two radioactive isotopes of iodine used for the diagnosis and treatment of thyroid disease have mass…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: What is the mass number (A) of an iron atom that has 31 neutrons?

A: Mass number is equal to the sum of the number of protons and the number of neutrons.

Q: Write the atomic symbol for the isotope with mass number 84.

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Q: 16. Give complete symbols of each atom, including the atomic number and the mass number. a. a…

A: An atom has nucleus. Protons and neutrons are present in nucleus. Electron revolve around the…

Q: Fill in the blanks. Be sure to input the isotope symbol fully. For example, if the isotope were…

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Q: Consider an ion Cr2+  that has a mass number of 54.   How many protons? How many electrons? How…

A: Given. Atomic mass of Cr = 54 ion = Cr2+

Q: If Chlorine has an atomic number of 17 and an atomic mass of 35, how many protons, neutrons, and…

A: Given that, Atomic no. of Cl = 17 Atomic mass of Cl= 35 then,

Q: How many electrons does it take to equal the mass of a proton?

A: An atom is made up of three subatomic particles. These are known as protons and neutrons that are…

Q: A certain isotope has a charge of +3 and has 33 protons and 42 neutrons in the nucleus. How many…

A: Consider the given information is as follows; Number of protons = 33 Number of neutrons = 42…

Q: In a sample of nitrogen, there is 99.63% N-14 atoms and 0.37% of N-15 atoms. What is the atomic mass…

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Q: Determine the number of subatomic particles of an atom given its mass number and

A: Either one of the thing is given atomic mass/ atomic no/ no of electron/proton/neutron or  name or…

Q: The net charge on an atom of a given element changes as ______ are added or removed. A) neutrons B)…

A: The net charge on an atom of a given element changes as ______ are added or removed.

Q: How do you figure how many neutrons and protons are in an isotope? for example 22 Ne

A: The atomic number in the periodic table refers to the number of protons.   To determine the number…

Q: The nucleus of an atom contains 56 neutrons.  The atom contains 43 electrons.  What element is it…

A: Given, Number of neutrons = 56 Number of electrons = 43 To calculate the mass number and to find…

Q: Define atom. List the subatomic particles, and describe their relative masses, charges, and…

A: Chemistry is the branch of science concerned with the composition, structure, properties, and…

Q: explain how we calculate the mass of an atom and why we write this down in atomic mass units

A: Atomic mass of an atom is the sum of total number of protons and neutrons present in the atom. It is…

Q: An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s…

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Q: Use the element box for potassium to fill in the missing information. 19 K Protons = Type here…

A: Given: Element box of Potassium:

Q: What are the names of the three subatomic particles? What are their approximate masses in atomic…

A: Subatomic particles are the parts of an atom. They constitute the atom. They play an important role…

Q: If an atom has 18 electrons, how many protons does it have?

A: An atom constitutes of electrons, protons and neutrons. The nucleus of atom contains proton and…

Q: Which statement about subatomic particles are false? Some atoms don’t have any protons.

A: All atoms have protons.  Every atom has fixed number of number of protons.

Q: An American penny is 97.5% zinc and 2.5% copper and hasa mass of 2.5 g. Use the approximation that a…

A: Given, An American penny is 97.5% zinc and 2.5% copper and has a mass of 2.5 g. Use the…

Q: How many protons, neutrons and electrons are there in a neutral atom of gallium-67 ? Protons:…

A: The given atom is neutral and is gallium-67  The number 67 means that the mass number of atom is 67

Q: OBo and F have the same number of neutrons. O"c and "N are isotopes of each other because their mass…

A: Atomic number = number of protons =number of electrons (for neutral element) Atomic mass = number of…

Q: define atomic number and atomic mass? Who discovered the concept of atomic numbes?

A: The atomic mass of an element is defined as the total mass of one atom of an element. Its unit is…

Q: determine atomic number, mass number, number of protons and number of electrons in a neutral atom…

A: It is given that the element is potassium which has an atomic number 19 and which has 22 neutrons,

Q: Cobalt-60 is a radioactive isotope sometimes used in the treatment of cancer. How many neutrons,…

A: COBALT - 60 Atomic number of cobalt = 27 Mass number of cobalt - 60 = 60 We know that, Atomic number…

Q: What is the formula of the species that has 24 electrons, 30 neutrons, and a 3+ charge?

A: Given data, Electrons 24, Neutrons 30 and charge is +3 The atomic number of Cobalt is 24

Q: What is mass number of a Ne atom that has 14 neutrons?

A: Symbol of an element as listed in periodic table has two numerals written with it. The one on…

Q: .What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass…

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Q: Enter your answer in the provided box. Determine the mass number of a sodium atom with 12 neutrons.

A: A question based on atomic structure, which is to be accomplished.

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: Rutherford's nuclear theory is based on three key points- (a) The nucleus is the core of the atom,…

Q: Gallium has an atomic number of 31 and a mass number of 70. Which table shows the number of protons,…

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Q: Write the complete symbol, including mass number and atomic number, for each atom? Contains 15…

A: The atomic number of an element is the number of protons in the nucleus of an atom or it is the…

Q: Be sure to answer all parts. How many protons, neutrons, and electrons are in the following isotope…

A: The atomic number (Z) of an atom is equal to the number of electrons and protons present in it.…

Group 14 Elements

The following elements come under group 14 of the periodic table.