For the atom with mass 107.90389 u, determine(a) the numbers of protons, neutrons, and electronsin the atom;

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: An element with an average atomic mass of 17.673 amu has two naturally occuring isotopes If one…

A: Given:- Average atomic mass = 17.673 amu  Mass & abundance of one isotope = 18.731 amu &…

Q: An atom of calcium is represented by 12C.. How many neutrons are in the nucleus of this atom?…

A:

Q: The nucleus, the massive center of an atom, contains which two particles?

A: Nucleus is the massive part of any atoms . It contains mostly all the mass any element. Nucleus was…

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

A:

Q: If you had a balance that could determine the mass of aproton, how many electrons would you need to…

A: Mass of a proton is 1.67×10-27kg and the mass of the electron is 9.31×10-31kg.

Q: Approximately how many times greater is the diameterof an atom than the diameter of its nucleus?…

A: Atoms are bigger in size and in the center of the atom nucleus is present.

Q: Differentiate between different isotopes of an element?

A: A number of atoms of some elements have been identified, which have the same atomic number but…

Q: Phosphorus has the atomic number 15 and an atomicmass of 31 amu. How many protons, neutrons, and…

A: In a neutral phosphorus atom:

Q: What is the symbol of another isotope of strontium with 51 neutrons?

A: Isotopes of an element have same number of protons with different number of neutrons in the nucleus.…

Q: One isotope of a nonmetallic element has mass number31 and 16 neutrons in the nucleus. The anion…

A: The chemical symbol for the anion has to be given,

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: Suppose we redefined the atomic mass scale by arbitrarily assigning to the naturally occurring…

A: The atomic mass of a single atom is simply its total mass of the protons, neutrons, and electrons in…

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: Which isotope has the same number of electrons and neutrons as the anion 19F-?

A:

Q: What is the mass of 4.97×1021 platinum atoms?

A: Mass has many units. Its SI unit is Kg. On atomic level, atomic mass unit, molar mass, molecular…

Q: Isotopes of the same element have different mass numbers? true or false

A: isotope are  two or more species of element  with the same atomic number and position in the…

Q: a) The abundance of an isotope of silver (Ag) with mass number 109 is 48.17%. How many neutrons are…

A: Since you have asked multiple independent questions, I am going to solve only the first part as per…

Q: if the atomic symbol 13354Xe, what is the mass #, # of protons, and # of neutrons?

A: The symbol of an element is given by the expression XZA, where Z is the atomic number and A is the…

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: 29 3. What information cannot be determined from the symbol notation 14Si? O the atomic mass O the…

A: The symbol notation given is

Q: Which elements make up about 99% of the mass of living things?

A: Elements are very important for the maintenance of biological life. For example sodium and potassium…

Q: Describe the electrical charges and relative masses of protons, neutrons, and electrons

A: Atomic Structure: The atomic structure can be described by saying that, atoms contain three types of…

Q: A. What is the mass number of an atom of Iron ( atomic number 26) with 32 neutrons?  B. Is this…

A:

Q: What is the atomic number of an element whose mass number is 78, which contain 50 neutrons per atom?

A: The atomic number of an element represents the total number of protons present in the nucleus of the…

Q: Iodine has a mass number of 127 and 53 protons, how many neutrons does it have?

A:

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: If the reference for atomic masses of the elements were changed to 12C = 10.00 the relative atomic…

A:

Q: The number of neutrons in the nucleus of the isotope 22Na is

A: The number of neutrons

Q: Suppose that a hypothetical element con- sists of a mixture of two isotopes. One iso- tope, having…

A:

Q: An element with 11 neutrons, 11 protons, and 11 electrons would have a mass number of _____?

A: The total number of neutrons and protons present in a nucleus is known as mass number.

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

A:

Q: 5- Atoms of the same element with different mass numbers are called..

A:

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: Magnesium has three isotopes with mass numbers 24, 25, and 26. (a) Write the complete chemical…

A: Atomic number (Z) is defined as a number of protons present in an atom.  In a neutral atom number of…

Q: Indicate the isotope having 12 protons, 11 neutrons and 12 electrons.

A: We have to predict the element symbol.

Q: In what way are isotopes of a given element always different? In what way(s) are they always the…

A:

Q: A single atom of element Q has a mass of 1.09 x 10 -22 g. What is the name of the element Q?

A: Given : Mass of single atom of element = 1.09 X 10-22 g Assuming atomic mass of element is M.

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

A:

Q: An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s…

A:

Q: The natural abundance of 3He is 0.000137%. (a) How manyprotons, neutrons, and electrons are in an…

A: a. The number of protons = 2  The number of electrons = 2 and  The number of neutrons = 3-2 = 1

Q: What element has a mass number of 9 and has five neutrons in its nucleus?

A:

Q: The americium isotope 241Am is used in smoke detectors.Describe the composition of a neutral atom of…

A: Each element/atom is made by neutrons, protons, and electrons. Neutrons, as well as protons, do…

Q: Ernest Rutherford concluded from experiments that they indicated nuclei of atoms are relatively O A.…

A: Correct ans- Far apart and positively charged.

Q: by An isotope of element B has hal. us many protons and half as many neutrons as an atom of 48TI.…

A: 3. Ans :-  An isotope of element B has half as many protons and half as many neutrons as an atom of…

Q:

A:

Q: When the Number of Neutrons Varies?

A: Atomic number (Z)- the number of protons or electrons present in an atom of element called as atomic…

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.