An atom has a +3 charge a mass # of 42 and 20 neutrons. What is the amount of electrons it has?

Q: Which describes an atom of plutonium?A. It can be divided into smaller particles that retainall the…

A: A. It can be divided into smaller particles that retainall the properties of plutonium.B. It cannot…

Q: If an atom of fluorine (F) has an atomic mass of 18.998, how many neutrons are in the nucleus? 9. O…

A: Applying formula A= Z+n

Q: What is the mass number for an atom of mercury containing 80 protons and 118 neutrons?

A: Given, number of protons = 80 Number of neutrons = 118

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: Fill in the blanks. Isotope 30Si4+ has: Number of protons Number of neutrons Number of electrons…

A: Given  Symbol of isotope  = Si4+30 Number of proton   = ?  Number of neutron = ?  Number of electron…

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: 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: What is the mass number of an isotope with an atomic number of 56 and that has 75 neutrons?

A: Mass number is the atomic mass of an atom. It is the sum of no of protons and no of neutrons present…

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: 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: 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: What is the mass number of an isotope with an atomic number of 61 and that has 68 neutrons?

A:

Q: What is the atomic number for an element whose mass number is 115, which contains 65 neutrons per…

A: Welcome to bartleby ! We have to tell atomic number

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: 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 is the atomic number for an element whose mass number is 196, which contains 116 neutrons per…

A: Given : mass number of element =196.                   Number of neutrons =116 To find : Atomic…

Q: Fill in the blanks. Isotope 76AS3- has: Number of protons Number of neutrons Number of electrons…

A:

Q: What is the mass number for an atom of calcium containing 20 protons and 21 neutrons?

A: The mass number of an element is the sum of the number of protons and the number of neutrons of that…

Q: What is the atomic number of an element whose mass number is 78, which contain 50 neutrons per atom?

A: The atomic number of an element represents the total number of protons present in the nucleus of the…

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

A:

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: 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: An unknown element contains 79 neutrons, 54 electrons and has a mass number equal to 135, the…

A: The total number of protons and neutrons is known as mass number. The mass number of the given…

Q: What is the atomic mass of Lithium, if 7.49%  is Li-6 and 92.51% of Li-7?

A: Given, The natural abundance of Li-6 = 7.49 % The natural abundance of Li-7 = 92.51 %   Considering,…

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: Oxygen has three isotopes, 16O, 17O, and 18O. The atomic number of oxygen is 8. How many protons and…

A: Isotopes are variants of a particular chemical element which differ in neutron number, and…

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

A:

Q: What is the difference between protons and neutrons?

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

Q: What are the different mass numbers of Isotopes ?

A: Different mass numbers of Isotopes are explained below,

Q: An ion of platinum has a mass number of 195 and contains 74 electrons. How many protons and neutrons…

A: Given data: The mass number of platinum ion=195 Number of electrons present in platinum ion=74 To…

Q: What is the proper way to write an atom with 17 protons and 20 neutrons?

A: An atom basically consists of proton, neutrons and electrons. The protons and neutrons are present…

Q: Write the isotope symbol that fits the description, using a superscript for the mass number and a…

A:

Q: Boron (B) has two naturally occurring isotopes: boron-10 (abundance = 19.8%, mass = 10.013 amu) and…

A: An atom consists of protons along with the neutrons which occupy the nucleus and the electrons which…

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: How many neutrons are there in an atom of iron with a mass number of 52?

A:

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: What is the mass number of potassium-39? What is the isotope’s charge?

A: Given atom,      Potassium-39   For a neutral atom, atomic number = Number of protons = Number of…

Q: calculate the atomic mass for Sb.

A: Average atomic mass is defined as the sum of the masses of its isotope each multiplied by its %…

Q: What is the mass number of an isotope with an atomic number of 57 and that has 72 neutrons?

A:

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: Positively charged particles of radiation emitted from the decay of radioactive substances are known…

A: Nuclear or radiation decay are primarily of three types: alpha, beta and gamma decay. Alpha…

Q: Atomic o Mass Number of Name uon lo Symbol Number Neutrons W. Number 8. 2raon ls. 1sd: bozogorq 10 6…

A: Atomic number of an atom is equal to the number of protons present in it. It is written in the…

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: Naturally occurring neon exists as three isotopes. 90.51% is Ne-20 with a mass of 19.99 amu, 0.27%…

A: Given: There are three naturally occurring isotope of Neon. Mass of isotope 1 = 19.99 amu. Abundance…

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: 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: In the isotope that has an atomic number of 9, mass number of 18, and charge of -1, there are:…

A: Given that: Atomic number = 9 Mass number = 18 Charge = -1

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…

Group 14 Elements

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