B) The average atomic mass of chlorine is 35.453. Does this mean that there are just two stable isotopes, one with atomic mass 35 and the one with atomic mass of 36? Explain your answer.

Q: What is distinctive about isotopes of elements, and why are they important?

A: The atomic number of an element is expressed as the number of protons and it is equal to the number…

Q: Almost all boron atoms are found in two forms: boron-10 and boron-11. Both isotopes behave alike…

A: Given, Boron atoms are found in two forms: boron-10 and boron-11 Average mass of B = 10.81 amu

Q: How many protons, neutrons, and electrons are in an atom of (a) 138Ba, (b) phosphorus-31?

A:

Q: (a) What isotope is used as the standard in establishing the atomic mass scale? (b) The atomic…

A: a)Atomic mass scale: It is relative scale used to determine the elements mass relative to…

Q: The atomic weight of Ga is 69.72 amu. There are only two naturally occurring isotopes of gallium: 69…

A: Given atomic weight of Ga is 69.72 amu

Q: 2.105 For the noble gases (the Group 8A elements) ¿He, 10Ne, 18 Ar, Kr, and Xe, (a) determine the…

A: The atomic number defined as the number of electrons or number of protons present in a neutral atom.…

Q: Determine the number of protons and the number of neutrons in isotope. 147N

A: Protons and neutrons are present in the nucleus and collectively known as nucleons. Protons are…

Q: How many protons, neutrons,and electrons are there in an atom of (a) 10 5B, (b) 36Ar, (c) 8538Sr,…

A: An atom consists of sub-atomic particles which are protons, neutrons (both present inside the…

Q: How many isotopes of chlorine exist in nature?

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

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: Discuss the significance of assigning an atomic mass of exactly 12 amu to the carbon-12 isotope.

A: The significance of assigning an atomic mass of exactly 12 amu to the carbon-12 isotope has to be…

Q: Uranium exists mainly as two isotopes in nature, possessing mass numbers 235 and 238. Write the full…

A: The atomic number of Uranium is 92. Hence number of protons in both isotopes = atomic number = 92

Q: A hypothetical element X has 2 major isotopes and an average atomic mass of 48.05 amu. Given that…

A: Average atomic mass=∑Atomic mass of an isotope×isotopic percentage100

Q: What is an isotope? How are isotopes denoted?

A: Molecular mass is the sum of protons and neutrons of an atom. In the modern periodic table, the…

Q: Define and discuss isotopes.

A: Isotopes are atoms that contain same number of protons and different number of neutrons. Isotopes…

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

A:

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: Explain how isotopes are produced by changing the relative number of specific subatomic particles

A: Isotopes are atoms of same elements which have same atomic number but different mass number. In…

Q: What is an atomic mass unit? Why is it necessary to introduce such a unit?

A: Matters are the substances that possess some mass and volume. These are formed by joining very small…

Q: Differentiate between an ion and an isotope

A: In order to differentiate between two species it means the difference between the species needs to…

Q: What isotope is used as the standard in establishing the atomic mass scale?  The atomic weight of…

A: The mass number given in the periodic table is the average mass of all the isotopes of an element.…

Q: An unknown element X has the following isotopes: ⁵²X (90.00% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X…

A: The approximate atomic mass of element x is calculated as,

Q: Why was it more difficult to discover neutrons than protons or electrons?

A: Neutrons was discovered by James Chadwick in 1932, after the discovery of electrons and protons.

Q: Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40. a) How are these…

A:

Q: This element has only two naturally occurring isotopes, in which the lighter isotope has an…

A: Given  Abundance of lighter isotope( AL )          = 19.9% Then abundance of heavier isotope (AH) =…

Q: Why is it that elements such as Gold, Fluorine, and Aluminum only have one isotopes?

A:

Q: Determine the number of protons and the number of neutrons in isotope. 2311Na

A: The number of protons and the number of neutrons in isotope 2311Na can be identified as, Atomic…

Q: There are two naturally occurring isotopes of B- boron. One has an atomic mass of 10.013 amu and a…

A:

Q: Explain how the existence of isotopes is related to the fact that atomic masses are not whole…

A: Isotopes: Compounds that are having same atomic number but the different mass number is called…

Q: Which statement about subatomic particles are false? Protons and neutrons have charges of the same…

A: Proton, neutron and electrons are the subatomic particles present in an atom.

Q: There are three stable isotopes of silicon: 28Si, 29Si, and 30Si. Their masses and natural…

A: We have three isotopes of Si  having abundance and mass, we have to calculate the weighted average.…

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: What data must you know about the isotopes of an element to calculate the atomic mass of the…

A: The elements that have different atomic mass and same atomic number are known as isotopes.

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: (a) What is the mass in amu of a carbon-12 atom? (b) Why is the atomic weight of carbon reported as…

A: Carbon is an element having atomic number 6. It belongs to 14th group and 2nd period. The valency of…

Q: Enter your answer in the provided box. The atomic masses of the two stable isotopes of copper,…

A: Average atomic mass is represented by the equation:

Q: What is the mass in amu of a carbon-12 atom?  Why is the atomic weight of carbon reported as 12.011…

A: The mass in amu of a carbon-12 atom is 12amu.

Q: How many protons, electrons, and neutrons are present in an atom of 52/24Cr?

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

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

A: Given : There are only 2 naturally isotopes of boron i.e B-10 and B-11. The average atomic mass of…

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: 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: Enter your answer in the provided box. 35 The atomic masses of the two stable isotopes of chlorine,…

A:

Q: Thallium has two stable isotopes, 203TIand 205TI. Knowing that the atomic weight of thallium is…

A:

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: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

A: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

Q: 2. Explain how Lavoisier's Law of Conservation of Mass supports Democritus' theory that atoms cannot…

A: Please find your solution below : Atom is the smallest unit of matter. It is defined as the basic…

Q: A mass of 18.6 g of an element is known to contain 4.84 x 1023 atoms. What is the atomic mass of the…

A:

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.