An unknown element contains 79 neutrons, 54 electrons and has a mass number equal to 135, the identity of the unknown element is

Q: Determine the number of protons and neutrons in each of the following isotopes.

A: Number of protons = atomic number  Number of neutrons = mass number - atomic number

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: 72 For the elemental symbol Ge, how many neutrons are present?

A: We are given  G3272e mass number=72 Atomic number=32 atomic number = number of proton=32

Q: What is the mass number and atomic number of a chlorine atom that has 17 protons amd 18 neutrons?

A: Given that, chlorine atom that has 17 protons amd 18 neutrons then,

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: Number of... Isotope Name Protons Neutrons Electrons Atomic Number Mass Numbe Argon-40 Argon-38…

A: Interpretation- To complete the table by filling it their proton, electron , Neutrons and their…

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: Describe the charge, relative mass, and position in an atom of the three main subatomic particles of…

A: Matter is composed of the smallest unit known as an atom. Atom is composed of 3 subatomic particles…

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: What is the mass number for an atom of barium containing 56 protons and 80 neutrons?

A: Atomic number = Number of protons  Mass number = Number of protons + number of neutron Given that:…

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: 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: 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: Which subatomic particle determines the atomic number?What determines the mass number?

A: Atom is the fundamental unit of a chemical compound or matter. An atom consists a nucleus in which…

Q: How is the mass number related to the number of protons and neutrons an atom has?

A: The nucleus of an atom contains three sub-atomic particles. These are protons, neutrons and…

Q: Rhenium has two naturally occurring isotopes, Re-185 (mass = 184.953 amu) and Re-187 (186.9558 amu).…

A: The average atomic mass of the substance can be determined by the addition of the masses of each…

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: 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: Neutrons: O Have a relative mass of 1 and a charge of +1 O Have a relative mass of 0 and a charge of…

A: A neutron is a sub-atomic particle with no net electrostatic charge, with a very similar mass to a…

Q: The total number of subatomic particles (protons, electrons, and neutrons) in an atom of 75Ge is…

A: Given:An atom 75Ge __ 75 is the mass number

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: 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: An isotope that contains 51 protons, 51 electrons, and 74 neutrons. What is its two notations?

A: Isotopes are those elements which have same atomic number but different mass number.   Atomic number…

Q: By observing the scattering of alpha particles, Rutherford determined that atoms have: positive…

A: Rutherford  model is well-known as gold foil experiment in which he demonstrated that the atom has a…

Q: What is the difference between protons and neutrons?

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

Q: An atom with 2 electrons, 2 protons and 4 neutrons has an atomic number of ...

A: Given -> Number of electrons = 2 Number of proton = 2 Number of neutron= 4

Q: 19 94 element: # protons: # neutrons:

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

Q: Isotopic elements contain the same number of neutrons

A: No, Isotopic elements doesn’t contain the same number of neutrons. So the above  statement (…

Q: What is the mass number of an isotope

A: Mass number is equal to sum of mass of atomic number and number of neutron

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: 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: How many neutrons are in uranium

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

Q: Which subatomic particles are found in the nucleus of an atom of beryllium

A:

Q: An isotope that contains 4 protons, 4 electrons, and 6 neutrons.

A: Atomic number (Z) is equal to number of protons Mass number (A) is the sum of number of protons and…

Q: What are the number of protons, neutrons, and electrons in the following isotopes?

A: Atomic number of an element is equal to the number of protons present in it which is written as…

Q: Define the terms Neutrons, Protons, and Nucleus?

A: The atom has three fundamental particles known as neutron, proton, and electrons.

Q: an oxygen atom with 10 neutrons

A: An oxygen element is a non-flammable element and exist in various isotopes. For the same element,…

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: mass number and atomic number of the alpha particle

A:

Q: A se atom has a mass number 78. Determine the number of neutrons, electrons and protons in this…

A: Selenium atom:In this atom, the atomic number illustrated by subscript and the mass number…

Q: An 18 O atom contains the same number of protons. neutrons, and electrons.

A: Given atom, 8O18

Q: What two particles are used to determine the mass number of an atom?

A: Given a three points  1-           proton 2-          neutron 2-          electron Determined the…

Q: NUnilar ext Calcium-39 Gold-197 125 82 +1 Isotope Name (w/mass number) Atomic Number of Number of…

A: Atomic mass of any element is given following expression Atomic mass = Total number of Protons +…

Q: Silver occurs as two isotopes with atomic masses 106.9041 and 108.9047 amu. The first isotope…

A: The avg Atomic mass = (Atomic mass of isotope 1 X % of isotope 1 + Atomic mass of isotope 2 X % of…

Group 14 Elements

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