A sample of the nonexistent element mythium consists of 25.59% of an isotope with mass number 580, 32.74% of an isotope with mass number 582, and 41.67% of an isotope with mass number 581. What is the atomic mass of mythium?

Q: Isotopes are defined as atoms ofa. the same element with different numbers of protons.b. radioactive…

A: Atoms of the same element have the same number of protons, which is also called the atomic number.

Q: Which subatomic particle was discovered by researchers working with cathode-ray tubes?

A: Cathode ray tube experiment Cathode ray tubes are sealed glass tubes are sealed glass tubes that are…

Q: What is the atomic weight of element X of an atom X-23 which have an isotopic mass of 23.02amu and…

A: The Atomic Weight of element X ofX23⇒23.02 amu isotopic mass ,X25⇒25.14 amu isotopic mass .

Q: The element copper has two naturally occurring isotopes.One of these has a mass of 62.93 amu and a…

A: Isotope The species with same atomic number but different mass number is known as isotopes. Average…

Q: Calculate the atomic mass of element "X", if it has 3 naturally occurring isotopes with the…

A:

Q: 1. A sample of magnesium has the following isotopic abundances: Isotopic mass (amu) 23.99 24.99…

A:

Q: Which statement is true?(a) For a given element, the size of an isotope with more neutrons is larger…

A: For a given element, atoms having same atomic number with different mass number are known as…

Q: What are the atomic number (Z), mass number (A), and symbol of the chlorine isotope with 18…

A: Isotopes are elements with same number of protons but having different number of neutrons. Isotopes…

Q: Atoms of the same element that have different atomic masses are called isotopes

A: An isotope is a variation of an element that possesses the same atomic number but a different mass…

Q: How many isotopes of chlorine exist in nature?

A: The element chlorine has two isotopes, chlorine–35 and chlorine–37.

Q: Consider the atom with the chemical symbol Ru. What would be the mass number for an atom of Ru which…

A: Mass number is  the sum of the numbers of protons and neutrons present in the nucleus of an atom..…

Q: If an atom were 4.5 football fields long, the nucleus would be the size of   a. a grape seed.   b.…

A: Given: Atom is 4.5 football field long To determine: Size of nucleus

Q: How are the isotopes of an element different from one another?

A: Isotopes are atoms of the same element which are different in mass. That means They have the same…

Q: Isotope a mass amu nd Li with a mass of 7.0160040 amu. What are the percent isotopic abundances of…

A: Let there is x percent abundance of 6 Li and 100-x percent abundance of 7 Li

Q: uppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 73.372…

A: When an element has more than one isotope, then we will take average atomic mass to calculate…

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 charge of the nucleus of element 89?

A: The number of protons corresponds to the charge of the nucleus since Neutrons have no net charge, it…

Q: The average atomic mass of lithium is 6.941 amu. Lithium has two naturally occurring isotopes, 6Li…

A: Given:The average atomic mass of lithium = 6.941 amu% of Li isotopes = 6Li (7.52%) and 7Li…

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

A:

Q: An isotope of element A contains the same number of neutrons as are found in an atom of $1V. The…

A: Atomic number of the elements indicates the number of protons present in the particular atom.  Mass…

Q: Copper exist in 2 naturally occuring isotopes the average atomic weight of copper is 63.546 amu if…

A:

Q: "the atom with 38 protons and 49 neutrons"

A: Given,        Number of protons = 38         Number of neutrons = 49  Assume an atom is 'X'

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: how many isotopes of bromine exist ?

A: Isotopes:The variants of a chemical element, which have same number of protons and differs in number…

Q: A hypothetical (fake) element has 2 naturally occurring isotopes. Isotope #1 has a mass of 185.8410…

A:

Q: - Rubidium has two naturally occurring isotopes, Rb-85 (rēlat and Rb-87 (relative mass 86.9092 amu).…

A: 35) Average atomic mass can be calculated by multiplying the % abundance of the isotope with…

Q: Which of the following describes an atom that is not an isotope of the other two? And why a)14p,…

A: Which of the following describes an atom that is not an isotope of the other two?

Q: A hypothetical element, X, has two isotopes: 47X with an isotopic mass of 47.621 amu and 51X with an…

A: The atomic mass of the element can be calculated as,

Q: Which of the following element has the isotope with 21 neutrons and mass number of 40?(1) Argon(2)…

A: Number of protons can be determined by subtracting number of neutrons from the mass number of an…

Q: A hypothetical element X is found to have an atomic weight of 37.45 amu. Element X has only two…

A: A hypothetical element X is found to have an atomic weight of 37.45 amu. Element X has only two…

Q: a. How many protons are in the nucleus of the isotopeIn-115?b. How many neutrons are in the nucleus…

A: a. How many protons are in the nucleus of the isotope In-115? b. How many neutrons are in the…

Q: An hypothetical element has the following distribution of natural occurring isotopes:      60.795%…

A:

Q: An isotope with atomic number 64 and mass number 158 is found to have a mass ratio relative to that…

A: Given An isotope has an atomic number of 64 and mass number of 158 It has a mass ratio of 13.16034…

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: 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: A soft silvery metal has two naturally occurring isotopes: mass 84.9118, accounting for 72.15% and…

A: Answer

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

A: Atom is considered as the smallest particle of matter. There are various models for describing the…

Q: An element has two naturally occurring isotopes. One has an abundance of 51.839% and an isotopic…

A:

Q: The average atomic mass of Ga is 69.72. Naturally occurring Ga is composed of Ga-69, which has an…

A:

Q: A fictitious element Z has an average atomic mass of 223.67 u.223.67 u. Element Z has two naturally…

A: Given: Atomic mass of element Z = 223.67 u There are only 2 naturally occurring isotopes of element…

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: Since different isotopes of the same element have the same chemical behavior, how can they be…

A:

Q: A hypothetical element Q (atomic mass: 142.61) consists of two stable isotopes: 45.3 % isotope A…

A: Relative abundance of isotope A is 0.453(45.3%) and hence, relative abundance of isotope B is 0.547…

Q: The diagram represents an atom of beryllium. K (a) Complete the following statements by writing one…

A: The diagram of beryllium atom given is,

Q: An isotope of Uranium has an atomic mass of 240. How many neutrons does this isotope have

A: mass number is the sum of number of protons and number of neutrons.

Group 14 Elements

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