Concept explainers
(a)
Interpretation:
The number of protons, neutrons and electrons present in the atom of
Concept Introduction:
Mass number is the sum of the number of protons and neutrons inside the nucleus of an atom. This gives the number of subatomic particle present inside the nucleus. Mass number is represented by the symbol A.
From atomic number and mass number, the number of each sub atomic particle can be found.
Complete chemical symbol notation can be given as.
An element is a pure substance that cannot be broken by ordinary
(a)
Explanation of Solution
Given atom is
Atomic number is given as
Therefore, the number of protons is
(b)
Interpretation:
The number of protons, neutrons and electrons present in the atom of
Concept Introduction:
Refer part (a).
(b)
Explanation of Solution
Given atom is
Atomic number is given as
Therefore, the number of protons is
(c)
Interpretation:
The number of protons, neutrons and electrons present in the atom of tantalum-180 has to be given.
Concept Introduction:
Refer part (a).
(c)
Explanation of Solution
Given atom is tantalum-180. From this it is understood that the atomic number is
Atomic number is given as
Therefore, the number of protons is
(d)
Interpretation:
The number of protons, neutrons and electrons present in the atom of
Concept Introduction:
Refer part (a).
(d)
Explanation of Solution
Given atom is
Atomic number is given as
Therefore, the number of protons is
Want to see more full solutions like this?
Chapter F Solutions
CHEMICAL PRINCIPLES PKG W/SAPLING
- Balance the following equations by filling in the blanks. (a) 92235U+01n54137_+201n+_ (b) 90232Th+612__01n+96240Cm (c) 24He+4296Mo43100_+_ (d) _+12H84210_+01narrow_forwardChlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?arrow_forwardGiven that the density of argon is 1.78 g/L under standard conditions of temperature and pressure, how many argon atoms are present in a room with dimensions 4.0 m 5.0 m 2.4 m that is filled with pure argon under these conditions of temperature and pressure?arrow_forward
- The number of protons, neutrons, and electrons, respectively, in the ionic species 209 9Bi* :3+ 83 are: (A) 83, 126, 80; (B) 83, 209, 80; (C) 86, 209, 83; (D) 83, 126, 86;arrow_forward(a) How many elements are found in period 4 in the periodic table? (b) How many elements are found in group 4A (or 14)?arrow_forward4) How many grams of aluminum are there in 4.05 x 1025 molecules of Al20;?arrow_forward
- (a) What is a hydrocarbon? (b) Butane is the alkane with a chain of four carbon atoms. Write a structural formula for this compound and determine its molecular and empirical formulas.arrow_forwardElement X has two isotopes, 28Q and 30Q. The relative atomic mass of X is 28.24. (a) Define the term "isotope". (b) Calculate the relative abundance of 28Q.arrow_forward(a) In the certain hydrated salt MSO34H2O, the mass percentage of H2O is 44.71%.Identify the element M in the salt?(b) A certain element has two naturally occurring isotopes.The mass of one of the isotopes is 106.905 amu and its natural abundance is 51.60%.The mass of the second isotope is 108.883 amu.Calculate the average atomic massWrite the chemical symbols of the isotopes(c) An organic compound consists of carbon, hydrogen and sulfur only.The percentage of carbon by mass in this compound was found to be 30.27%.The complete combustion of 1.367 g this compound produces 1.765 g of sulfur dioxide(SO2) (i) Determine the empirical formula for this compound.(ii) If a sample of this compound having the mass 3.781 × 103 mg contains 9.528 × 10–3 molesof the compound, determine the molecular formulaarrow_forward
- (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a nickel atom is 125 pm. What is this value in meters and in centimeters? cm -23 (b) The mass of a single nickel atom is 9.75×10 g. Suppose enough Ni atoms were lined up like beads on a string to span a distance of 31.3 cm (12 inches). How many atoms would be required? atoms What mass in grams of Ni would be used? Could you weigh out this amount of nickel using a typical laboratory balance? (c) Taking the density of nickel metal to be 8.91 g/cm, calculate the mass of metal needed to form a piece of Ni wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is n times its radius squared times its height. (V = nr h) How many nickel atoms does this represent? atomsarrow_forwardBoron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively. (a) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?arrow_forwardGive the chemical formula for (a) chlorite ion, (b) chlorideion, (c) chlorate ion, (d) perchlorate ion, (e) hypochlorite ion.arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning