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

Q: An imaginary element has two naturally occurring isotopes and has an average atomic mass of 150.2…

A: The relative abundance of each isotope is calculated using equation (1) in which mavg is the average…

Q: The mass of 6 million molecules of a diatomic gas is 5.1  × 10-19 kg. What is the atomic mass of the…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

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 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: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A: The term isotopes can be defined as the variants of a given chemical element that differ in neutron…

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

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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: The element boron has two stable isotopes: boron-10 (10.0129 amu) and boron-11 (11.0093 amu). The…

A: The term isotopes refer to the atoms of a particular element which have same atomic number or same…

Q: Q the number of protons in the nucleus of an atom is 8, while the number of neutrons in the nucleus…

A: zXA   where  X = Element Z = atomic number = no. of protons  A = Mass number    and A = p + n  p =…

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

A: Given statements, A phosphorus atom has 15 protons in its nucleus and 150 electrons outside of its…

Q: What is the mass number of a phosphorous (P) atom with 17 neutrons?

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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 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: What do all isotopes of an element have in common? How do they differ? Provide an example to explain…

A: Each element of the periodic table has an atomic number and mass number. The atomic number is…

Q: An isotope of mercury has 80 protons and 120neutrons. What is the mass number of this isotope?

A: The atom consists of 3 subatomic particles: Protons: They are positively charged particles present…

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: (c) Calculate the mass percent of protons in the nucleus of each of these isotopes. % of protons in…

A: The isotopes given are 105B and 115B.

Q: Using this information along with the information in the table, calculate the % abundance and the…

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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 are isotopes of a particular element alike? How are they different?

A: Isotopes are atoms of the same element that have different numbers of neutrons but the same number…

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: If a neutral atom of an element has 19 electrons and 14 neutrons, its atomic mass is??

A: Given  Number of electron = 19 Number of neutron = 14  atomic mass = ?

Q: Consider an element Z that has two naturally occurring isotopes with the following percent…

A: average atomic mass= ∑%abundant×Molar mass/100 using this we can calculate the average atomic mass…

Q: Suppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 71.123…

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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: 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: 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: What is the mass of iridium 2 most common isotopes and the numbers of protons and neutrons in each…

A: The elements which has same atomic number but different mass number is known as Isotopes. Iridium…

Q: The atomic mass of rhenium is 186.2 atomic mass units given that 37.1% of natural rhenium is rhenium…

A: Isotopes of an atom have equal number of protons with different number of neutrons, hence the…

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

A: Given statement, Since electrons are smaller than protons, and since a hydrogen atom contains only…

Q: For an isotope that has 82 protons and 124 neutrons. What is the mass number (A) and what is the…

A: Given :- number of protons = 82               number of neutrons = 124  To be calculated :-  Mass…

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: How many protons, neutrons, and electrons are contained in an atom of argon, which has an atomic…

A: The atomic number is determined by the number of protons. The number of neutrons is obtained by the…

Q: The first has a mass of 121 u and a percent natural abundance of 57.3 %. The second has a mass of…

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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: 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: 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: B) The average atomic mass of chlorine is 35.453. Does this mean that there are just two stable…

A: In order to explain the answer for the above question we have to first understand the given question…

Q: The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of…

A: Atomic species that have the same atomic number but different mass numbers are called isotopes.  An…

Q: Assume element X has 2 isotopes: X-125 and X-126. For every 100 atoms of X, 30 of them have a mass…

A: Average atomic mass =mass of isotope X fraction abudance of isotope +mass of isotope -2X fraction of…

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

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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: neutrons

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Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

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Q: An unknown element has two naturally occurring isotopes. Isotope 1 has a mass of 121.0 amu and an…

A: Following equation will be used to solve this equation,

Q: Q:) the number of protons in the nucleus of an atom is 8, while the number of neutrons in the…

A: An atom consist of 3 fundamental particles electron, proton and neutron. In a neutral atom number of…

Group 14 Elements

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