Interpretation:
The three indicated red element and their group should be determined. Whether these elements are catrgorized as metals, nonmetal or semimetals should be determined. Also, whether these elements should be expected to have similar or different properties should be determined.
Concept introduction:
Periodic table represents a systematic arrangement of elements according to their chemical and physical properties. Here, elements are represented as a two-letter symbol and are arranged in increasing order of
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
LCPO CHEMISTRY W/MODIFIED MASTERING
- Given that the periodic table is an organizational scheme for the elements, what might be some other logical ways in which to group the elements that would provide meaningful chemical information in a periodic table of your own devising?arrow_forwardThe natural abundance of the three stable isotopes are 90.92% isotope A (19.9924 amu),0.3104% isotope B (20.9938 amu), and 9.1784% isotope C (22.0330 amu). Calculate therelative (or average) atomic mass of this element and compare your value with that given inthe Periodic Table to identify the likely element. (Note: The units of atomic mass are atomicmass units (amu).arrow_forwardRecognize the important subdivisionsof the periodic table: periods, groups(families), metals, and nonmetals.arrow_forward
- Which phrase deseribes a compound that .consists of two elements? (1) a mixture in which the elements are in a variable proportion (2) a mixture in which the elements are in a fixed proportion (3) a substance in which the elements are chemically combined in a variable proportion (4) a substance in which the elements are chemically combined in a fixed proportion Given the particle diagram: Key atom of an element atom of a different elementarrow_forwardAmong the 118 known elements, there are approximately equal numbers of metals and nonmetals. True or False?arrow_forward57. Which elements are alkaline earth metals?(a) sodium(b) aluminum(c) calcium(d) barium(e) lithiumarrow_forward
- Atoms of the same type can have different mass numbers. These atoms are called "isotopes". Consider two electrically-neutral isotopes of carbon (C): . One carbon atom has a mass number of 12. One carbon atom has a mass number of 14. . (A) Which subatomic particle (protons, neutron, electron) do these two atoms have in common? How are they similar? (B) Which subatomic particle (protons, neutron, electron) is different among these two atoms? How are they different?arrow_forwardWhich of the following is a property of carbon atoms? im not sure which one because arent carbon atoms found in all living things? idk which one of these it issss becuase carbon reactions with some stuff too so idk They are chemically inert. They readily give up two electrons. They are found in all living things.arrow_forwardThe calculation for the atomic mass requires the •percent (%) abundance of each isotope and •atomic mass of each isotope of that element. To calculate the atomic mass of an element with two isotopes: mass isotope (1) × (%)/100 + mass isotope (2) × (%)/100 atomic mass of element Calculate the mass for the atom of Lithium, if the Alkali Metal has two naturally occuring isotopes: Lithium has two naturally-occurring stable isotopes, 6Li (mass 6.015 a.m.u. and abundance 7.5 %) and 7Li (of mass 7.016 a.m.u with an abundance of 92.5 %). Round your answer to the nearest thousandths.arrow_forward
- Helium is an inert gas, meaning that it doesn't readily combine with other elements. What five other elements would you also expect to be inert gases? (See the periodic table in the Study Area.)arrow_forwardOnly two isotopes of boron (B) occur in nature; theiratomic masses and abundances are given in the followingtable. Complete the table by computing the relative atomicmass of 11B to four significant figures, taking the tabulatedrelative atomic mass of natural boron as 10.811.Isotope % Abundance Atomic Mass10B 19.61 10.01311B 80.39 ?arrow_forward1. Describe briefly, indicating the scientist responsible, experiments that gave the following evida,riee7RT¬the model of an atom:a) The atom consists of a very tiny, thickly dense positively charged nucleus, surrounded by a negatively charged electron cloud.b) The nucleus contains a specific number of protons, positively charged particles that gives the atomic number.c) Neutrons together with the protons in the nucleus account for the atomic weight.arrow_forward
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher: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