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
CHEMISTRY-TEXT
- 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 advantage of using Helium in decorative and weather balloons over that of Hydrogen is it is cheap it is abundant. it has low density. it is not flammable. Among the different scientists who proposed the arrangement of elements in the periodic table, Dmitri Mendeleev was given the credit for the modern periodic table because of * his prediction of properties of undiscovered elements by leaving gasp in the perio table. O his arrangement according to the properties of elements. his arrangement according to the element's atomic mass his arrangement according to the element's atomic number. Which of the following properties of elements increasels from left to right? (a) electronegativity. (b) electron affinity. (c) ionization energy. (d) atomic radius. a and b b and c c and darrow_forwardWhich 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_forward
- Recognize the important subdivisionsof the periodic table: periods, groups(families), metals, and nonmetals.arrow_forward57. Which elements are alkaline earth metals?(a) sodium(b) aluminum(c) calcium(d) barium(e) lithiumarrow_forwardAmong the 118 known elements, there are approximately equal numbers of metals and nonmetals. True or False?arrow_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_forwardNaturally occurring silicon consists of three isotopes, 28 Si, 29 Si, and 30 Si, whose atomic masses are 27.9769, 28.9865, and 29.9838, respectively. The most abundant isotope is 28 Si, which accounts for 92.23% of naturally occurring silicon. Given that the observed atomic mass of silicon is 28.0855, calculate the percentages of 29 Si and 30 Si in nature. Please write it on a paper, thank you.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