An ion of platinum has a mass number of 195 and contains 74 electrons. How many protons and neutrons does it contain, and what is its charge?

Q: Which statement about subatomic particles are true? If an atom has an equal number of protons and…

A: This is a true statement because the charge of the proton and the electron are equal in magnitude…

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: Of the three subatomic particles, a(n)  has a charge but negligible mass, whereas a neutron has mass…

A: To find: From the subatomic particles : a) n has a charge but negligible mass b) a neutron has mass…

Q: An ion composed of which of these particles would havea mass of approximately 16 amu and a charge of…

A: An atom consists of the nucleus at its center, and electrons revolve around the nucleus. The nucleus…

Q: The three most common isotopes of tin have mass numbers 116, 118, and 120. For each isotope, give…

A:

Q: A carbon atom has a mass number of 12 and an atomic number of 6. How many neutrons does it have?

A: The atomic no. of the atom can be described as the total no. of protons that are present in the…

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: Beryllium has an atomic number of 4 and a mass number of 10. From this you can determine Beryllium…

A:

Q: The atomic mass of copper is 63.546 amu. Do any copper isotopes have a mass of 63.546 amu? Explain.

A: The atomic mass of copper is 63.546 amu.

Q: How many neutrons are there in an atom of lead whose mass number is 208?

A: Given: mass number is 208 To find: number of neutrons

Q: How many protons and neutrons are in an atom of Pm-149? Number of protons Number of neutrons =|

A: given atom, Pm-149 its symbol is Pm61149

Q: What is the mass number (A) of a calcium isotope that has 19 neutrons?

A: Answer :-  The mass number (A) of a Calcium isotope that has 19 neutrons = 39…

Q: What is the symbol for an Atom that contains 91 protons in 140 neutrons?

A: Atomic number (Z) is the number of protons in an atom.  Mass number (A)is the combination of protons…

Q: Chlorine has two abundant isotopes, Chlorine-35 and Chlorine-37. How many protons and neutrons are…

A:

Q: How many protons and how many neutrons are there in a nucleus of the most common isotope of (a)…

A: Atomic number: The total number of protons in the nucleus of an atom gives us the atomic number of…

Q: 1. What is the mass number of a potassium (K) atom that has 20 neutrons?

A: Atomic number (Z) = Number of protons Mass number = number of protons + number of neutrons

Q: Iodine has a mass number of 127 and 53 protons, how many neutrons does it have?

A:

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: How many protons and neutrons are in an atom of Li-7 ? Number of protons = | Number of neutrons =

A: Mass of an atom arises due to the presence of both protons and neutrons present in a nucleus. The…

Q: An element with 11 neutrons, 11 protons, and 11 electrons would have a mass number of _____?

A: The total number of neutrons and protons present in a nucleus is known as mass number.

Q: Which statement about subatomic particles are false? Protons have about the same mass as neutrons.

A: An atom is made up of subatomic particles which are protons, neutrons and electrons.

Q: Consider a hypothetical case in which the charge on a proton is twice that of an electron. Using…

A: We need to consider the hypothetical case where the charge on the proton is twice than that of an…

Q: Which statement about subatomic particles are false? Protons and neutrons have charges of the same…

A: Proton, neutron and electrons are the subatomic particles present in an atom.

Q: What is the mass number of an atom of calcium that has 21 neutrons?

A: We know ,  Mass number of an atom = number of proton + number of neutron

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

A:

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: The numbers of protons, neutrons, and electrons in the 23 Na isotope, respectively, are: 11 اختر…

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

A:

Q: Neutral particles are called: Particles that have a charge are called: Particles of the same element…

A: Here is the answer

Q: An atom has a net charge of -1. It has 18 electrons and 20 neutrons. Give: (i) The number of protons…

A: Given that, an atom has a net charge of -1. It has 18 electrons and 20 neutrons. We have to…

Q: How many neutrons are there in chlorine Cl

A: Isotopes:  The atom has same atomic number but different mass number is called isotope.The stable…

Q: What is the name of the following atoms a) an atom? with 3 protons and 4 neutrons.

A: Given that, a)an atom with 3 protons and 4 netrons What is the name of it?

Q: Naturally occurring chlorine (Cl) consists of 2 isotopes, 35Cl and 37Cl. Their relative abundances…

A:

Q: Explain the difference between an atom of xenon-130 and an atom of xenon-136. Give how many protons,…

A: Given :-  Two isotopes of xenon i. e.  Xenon-130 and Xenon-136  To explain :- difference between two…

Q: What is the mass number of an element that contains 25 protons, 22 electrons, and 20 neutrons?

A: The given data contains, Number of protons = 25. Number of electrons = 22. Number of neutrons = 20.

Q: Element "X" has a mass# of 53. How many neutrons does it have if its atomic# is 27

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

Q: 4. A. B. C. D. Nitrogen atoms have 7 protons. How many electrons are in an ion with a charge of…

A: Given that, nitrogen atoms have 7 protons. We have to answer the given questions. Introduction: The…

Q: (1) The radioactive isotope selenium-75 is used in medical imaging as indicated on the table above.…

A: Dear student since you have asked two different questions but according to guidelines we will solve…

Q: Consider a hypothetical case in which the charge on a proton is twice that of an electron. Using…

A: Atomic number of potassium is 19 and mass number is 39

Q: Which atomic particles are equal in mass? O neutrons, protons, and electrons protons and electrons O…

A: Atomic particle is a smallest particle. It consists of electrons, protons, and neutrons. Electrons…

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: 4/2He+2has how many protons, neutrons, and electrons?

A: Consider the relation between atomic number, number of protons and number electrons in the neutral…

Q: A certain ion X3+ contains 21 electrons and 29 neutrons Identify an ion? what is the mass number…

A: Ions are formed, when an atom gains or loses its electrons, so the ions do not have the equal number…

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: Antimony has two naturally occurring isotopes: 121Sb (isotopic mass 120.904 amu) and 123Sb (isotopic…

A: If A1 and A2 atomic masses of two isotopes of an element with X1 and X2 as their percentage…

Q: How many protons neutrons and electrons are present in a single atom of bromine-79?

A: Since the atomic number of bromine = 35  hence number of electrons = Atomic number = 35

Q: What is the mass number of an atom which is made up of 38 protons, 52 neutrons and 38 electrons.

A: Mass number = Number of protons + Number of neutrons

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: How do I figure out how many protons and neutrons in Throium+2

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

Group 14 Elements

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