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

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: Answer the questions with the definition and show with a figure where this information is found in…

A: Atomic number : The number of a chemical element in the periodic system, whereby the elements are…

Q: e terms atomic number, mass number, and atomic mass. Then, (ii) explain what isotopes are and (iii)…

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Q: Determine the atomic symbol, atomic number, and mass number for the isotopes that match each of the…

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Q: atomic

A: Isotope is iodine and it's symbols is " I "  1)  53I127  2) 53I125  3) 53I120

Q: Out of the atomic number, atomic mass number, atomic weight, isotopes which one of these are unique…

A: Atomic number = It is equal to the number of protons present in the nucleus of an atom.Atomic weight…

Q: Characterize elements and their isotopes.

A: Due to the discovery of various elements, it was very difficult to organize and study the…

Q: define atomic mass and atomic number?

A: Atomic mass is the quantity of matter contained in an atom of an element. It is expressed as a…

Q: What is the atomic number of magnesium? How many

A: Magnesium :- Atomic No.  = 12 No. of Proton = 12

Q: j. How is the mass number related to the number of protons, neutrons, and/or electrons? k. Potassium…

A: j) Mass no. is the sum total of no. of protons and neutrons. Mass no.=no. of protons+no. of neutrons…

Q: what do you think the atomic number represents? WHICH OF THIS ANSWER IS CORRECT A)number of…

A: An Atom is made up of 3 sub-atomic particles. 1) Electron  2) Proton  3) Neutron

Q: Discuss the structure of an atom in terms of its electrons, protons, and neutrons.  b) A neutral…

A: The structure of an atom is similar to the solar system in which all the planets revolve around the…

Q: What particles are found in the nucleus of an atom? What is the charge of the nucleus?

A: Sub-atomic particles are the particles that are present inside the atom. Three sub-atomic particles…

Q: Use the References to access important values if needed for this question. The atomic weight of…

A: The given chemical element is Cesium (Cs). It is an alkali metal. Given atomic mass is…

Q: How much (in atomic mass units, amu) would 78 atoms of an element with atomic mass 107.18 weigh?…

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Q: Consider the following atoms in which X represents the chemical symbol of the element: 19/42X,…

A: Atomic number gives the number of protons present in the nucleus or the number of electrons present…

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

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Q: Define both the Greek atomic theory and the modern day theory of atoms. How does the Greek atomic…

A: The Greek assumption of atoms with different shapes wasn't based upon any empirical evidence but on…

Q: the number of protons in an atom is equal to the atomic number true or false?

A: Given statement :- The number of protons in an atom is equal to the atomic number  To determine :-…

Q: Naturally occurring iodine is iodine-127.  Medically, radioactive isotopes of iodine-125 and…

A: If   XZA is the chemical element for an isotope thenA is the mass number A = number of protons +…

Q: What is the atomic number for an element whose mass number is 138, which contains 80 neutrons per…

A: Given : Mass number = 138  And number of neutrons in 1 atom = 80

Q: How are isotopes depicted in an atomic symbol?

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Q: What is the charge of an element that contains 38 protons, 36 electrons, and 38 neutrons?

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: Electron- Proton- Atomic number- Atomic mass- Neutron- Nucleus- C. Isotopes or Different Elements?

A: A typical atom is made up of subatomic particles that include electrons, protons, and neutrons.…

Q: 4. HYDROGEN Atomic Number: Atomic Mass: # of Protons: # of Electrons: # of Neutrons:

A: Given element,    Hydrogen (H)

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: Atomic Atomic Number # of Mass # of # of Symbol Name of Element Number Protons Neutrons Electrons 11…

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Q: Magnesium has three isotopes that contain 12, 13, and 14 neutrons. For each isotope give the…

A: The protons, neutrons, and electrons are the salient features of an atom. The protons present in the…

Q: b. Rutherford created the cathode-ray tube and was the lith Which of the following is(are) correct?…

A: The correct statement (s) are to be determined. (a) Ca2+2040 ion : The atomic number=20 The number…

Q: b. An atom that has a mass number of 39 and contains 19 protons. Potassium C. An atom with mass…

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Q: Complete the table below: Substance Atom or Ion? # protons # neutrons # electrons Atomic # Mass…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

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: How many isotopes does this element have?

A: From the graph, it is cleared that the number of isotopes of the unknown element is 5.

Q: Define atomic number, atomic weight, and isotope.

A: Elements are placed in the increasing order of their atomic number in the horizontal rows and…

Q: Given these two atoms, are they isotopes of the same element? Select one: a. No, since they don't…

A: The atoms with the same number of protons but the different number of neutrons or mass numbers are…

Q: An element from the Periodic Table is shown below. The atomic mass is given. A) Give the Name,…

A: Atomic mass: Atomic mass of an element is the total number of protons and neutrons present in the…

Q: Which pair correctly matches an element to its atomic number? O a) 9.012 - Be O b) 12.01 - C c)…

A: The atomic number of an element is equal to the total number of protons in the nucleus of the…

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

A: The given statement is  Is the statement inconsistent with Rutherford’s nuclear theory as it was…

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: One isotope of an element has a mass of 65.183 amu and 72.23% natural abundance. Another isotope has…

A: Assume an element is X,  one of Isotope of X is X1 atomic mass is 65.183 amu and natural abundance…

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: OXYGEN Atomic Number: Atomic Mass: # cf Protons: # of Electrons: # of Neutrons: 1 1

A: Atomic number of an element = Number of protons = Number of electrons Mass number = Number of…

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: what element has 27 electrons and 29 neutrons ?

A: Element consist of Atoms. Atoms may consist of subatomic particle that is electron, proton and…

Q: Which of the following statements is TRUE, and why? A. Anions are usually larger than their…

A: A. Anion: It is the negatively charged species which has more number of electrons than protons.…

Q: This homework is going to center around a completely made up element - Maplenium. This metal has a…

A: Please find the solution below:

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…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.