While the most common isotope of nitrogen has a mass number of 14 (nitrogen-14), a radioactive isotope of nitrogen has a mass number of 13 (nitrogen-13). Nitrogen-13 is used in PET (positron emission tomography) scans by physicians to monitor brain activity and diagnose dementia. For each isotope, give the following information: (a) the number of protons; (b) the number of neutrons; (c) the number of electrons in the neutral atom; (d) the group number; and (e) the number of valence electrons.

Q: 2. For each ionic depiction, give the name of the parent atom, its mass number, and its group and…

A: Atomic number = Number of proton Mass number = number of proton + number of neutron Atom is…

Q: Three magnesium isotopes have atomic masses and relative abundances of 23.985 amu (79.99%), 24.986…

A: The atomic of an element = Σ Atomic mass ( Isotope ai ) X Abundance (Isotope ai) Atomic masses and…

Q: Consider (a) an atom with 20 protons, 20 electrons and 20 neutrons, (b) an atom with 20 protons, 20…

A:

Q: Each of the following isotopes is used in medicine. Indicate the number of protons and neutrons in…

A: Number of protons = Z Number of neutrons = A - Z Here, Z is the atomic number and A is the atomic…

Q: 1)    The element gallium (Ga) exists in two isotopic forms with the following abundances: 60.16%…

A:

Q: An element has nine protons and 10 neutrons in the neutral atom. (a) How many electrons are present…

A: Given: Number of protons= 9 Number of neutrons = 10 To find: The number of electrons Atomic number…

Q: Choose the correct answer. The difference between the mass number of an isotope and its atomic…

A: ) directly related to the identity of the element; (b) the number of electrons; (c) the number of…

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: Chromium has four naturally-occurring isotopes: 4.34% of 50Cr, with an atomic weight of 49.9460 amu;…

A:

Q: Only two isotopes of copper occur naturally, 63Cu (atomic mass = 62.9296 amu; abundance 69.17%) and…

A: It is given that :Atomic mass of 63 Cu = 62.9296 amuNatural abundance of 63 Cu = 69.17 %Atomic mass…

Q: Consider the reaction,​​H2(g) + Cl2(g) ® 2 HCl(g) How does the value of DG change when the pressures…

A:

Q: Give the number of protons, neutrons, and electrons in each element: (a) silver-115; (b) 197Au; (c)…

A: General representation of an element : XZA  Z = atomic number = number of protons  Number of protons…

Q: What are (i) mass, (ii) charge and (iii) location in the atom of each of the following sub-atomic…

A:

Q: A naturally occurring element identified by the symbol 'X', has the following isotopic composition…

A: The question is based on concept of atomic mass calculations. we have been given percentage…

Q: Rubidium has two naturally occurring isotopes, rubidium-85 (atomic mass = 84.9118 amu; abundance =…

A: Given information:Isotopes of rubidium are Rb-85 and Rb-87.Atomic mass of Rb-85 is 84.9118 amu and…

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: Naturally occurring sulfur consists of four isotopes: 32S (31.9721 amu, 95.04%); 33S (32.9715 amu,…

A: Answer is written and explained below:

Q: Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the…

A: Given that : Isotopic mass of X-39(m1) = 38.70 amu Abundance (A1) = 33.00% Isotopic mass of X-41(m2)…

Q: a) How many protons, electrons, and neutrons are in an 266 Sg atom? (atomic mass = 266) b) Atoms…

A: Elements are the species which consist of only one kind of atoms. In other words, species which…

Q: There are two isotopes of the element lithium that occur naturally, 6Li (mass = 6.015 amu) and 7Li…

A: Let the percentage abundance of one of the isotope be x. Then the percentage abundance of another…

Q: The isotope carbon­11 does not occur in nature but has been made in the laboratory. This isotope is…

A: Given: The carbon isotope= C611

Q: Isotope 25Mg2+ has: Number of protons Number of neutrons Number of electrons Mass number

A: Given :-  25Mg2+  To calculate :-  number of protons  number of neutrons  number of electrons  mass…

Q: Copper has two stable isotopes with the following atomic masses: copper-63 (atomic mass = 62.9296…

A: Given: average atomic mass of copper = 63.546 amu atomic mass of copper-63 = 62.9296 amu atomic mass…

Q: The most common isotope of oxygen has a mass number of 16, but two other isotopes having mass…

A: Isotopes are the compounds having same atomic number but different mass number.  They have same…

Q: 3. How many protons, neutrons, and electrons are there in the following atoms? (a) ¹4C (b) 59Fe (c)…

A:

Q: Give the following information about the atom shown: (a) the number of protons and neutrons in the…

A: In a neutral atom, the number of proton is equal to the number of electron. However, this is not so…

Q: Identify the element with each atomic number, and give the number of protons and electrons in the…

A: The atomic number (Z) of any atom is the number of protons present in the nucleus of that atom. The…

Q: a)For carbon-12 and carbon-14, how many protons and neutrons are in each nucleus? Carbon-12 has…

A: The formula used here, Number of neutrons + number of protons = mass number For neutral atom,…

Q: There are two stable isotopes of copper found in nature,63Cu and 65Cu. If the atomic weight of…

A: True statements is : (b) 63Cu must be more abundant than 65Cu. 65Cu contains two more neutrons than…

Q: Naturally occurring tungsten metal is composed of three stable isotopes: 182 74W, with a natural…

A:

Q: (a) Define atomic number and mass number. (b) Which of these can vary without changing the identity…

A: a)Atomic number (Z) is defined as the number of protons present in the atom.Mass number is defined…

Group 14 Elements

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