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Concept explainers
Interpretation:
The element that is located in the
Concept Introduction:
Periodic law states that if the elements are arranged in increasing order of
Location of an element in a periodic table can be given by the period number and the group number. The horizontal row in a periodic table where the elements are present is known as Period. The vertical column in a periodic table where the elements are present is known as Group.
Chemical properties of the elements repeat themselves at regular intervals because of the electronic configuration. The elements that are present in a Group have similar chemical properties. This is because the outer-shell electronic configuration will be the same.
The periodic table has all the elements that can be distinguished based on the outer-shell electron. If the outer-shell electron is present in s subshell, then the elements are present in s area of periodic table. If the outer-shell electron is present in p subshell, then the elements are present in p area of periodic table. If the outer-shell electron is present in d subshell, then the elements are present in d area of periodic table. If the outer-shell electron is present in f subshell, then the elements are present in f area of periodic table.
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Chapter 3 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- C6h1206 is the chemical formula for aarrow_forwardA metal ion with a 2+ charge has 23 electrons and forms a compound with a halogen ion that contains 17 protons. a. What is the identity of the metal ion? b. What is the identity of the halogen ¡on and how many electrons does it contain? c. Determine the compound that it forms and name it.arrow_forwardSome dried beans with a 14C/12C ratio one-eighth of the current value are found in an old cave. How old are the beans?arrow_forward
- Select the correct answer. Chlorine has seven electrons in its valence shell. It accepts an electron to complete its octet and becomes a chlorine ion (Cl'). What is the nature of this chlorine ion? O A. Cation O B. Anion O C. Metal ion Reset Next © 2021 Edmentum. All rights reserved. OV 0 8:21 & 7arrow_forwardAt 39.9ºC, a solution of ethanol (XetOH = 0.9006, P * etOH = 130.4 Torr) and isooctane (P * iso = 43.9 Torr) forms a vapor phase with YetOH = 0.6667. The total pressure is 185.9 a. Calculate the activity and the activity coefficient of each component.b. Calculate the total pressure the solution would have if it were ideal.c. Comparing the ideal pressure to the actual pressure, what does this indicate about the molecular interactions?arrow_forwardA physician prescribes a prescription of Doriden, 325 mg, which requires you to prepare 30 capsules to be taken by a patient 1 hour before bedtime. Assuming that you will make a minimum of extra powder, how many tablets will you use to make this prescription? How many capsules will you calculate for? (Doriden is available in your pharmacy as a 500 mg tablet weighing 750 mg) Select one: a. 20 tablets, 30.77 capsules b. 19 tablets, 30 capsules c. 19 tablets, 32 capsules d. 20 tablets, 40 capsules What is the weight in grams of 1 Liter of alcohol (density, 0.816 g/mL? O O Oarrow_forward
- 11.68 Acetylene (ethyne) gas reacts with oxygen and burns at 3300 °C in an acetylene torch. (7.4, 7.7, 8.6, 11.4, 11.5) a. Write the balanced chemical equation for the complete combustion of acetylene. b. What is the molar mass of acetylene? c. How many grams of oxygen are needed to react with 8.5 L of acetylene gas at STP? d. How many liters of CO2 gas at STP are produced when 30.0 g of acetylene undergoes combustion?arrow_forwardThe radioactive isotope Yttrium-90 (Y-90, Z=39), a beta emitter, is used in cancer treatment and as a colloidal injection into large joints to relieve the pain of arthritis. What is the abbreviated formula of the "daughter nuclide" produced in the nuclear reaction? A. none of the above B. Zn - 90 C. Br - 88 D. Y- 90 E. Zr - 90arrow_forwardDraw the Fischer projection formula for each of the following molecules. 1-36 а. b. ОН НО CH3 CI H i CH3 CH3 d. CH3 с. C. Cl ОН H CI НО Harrow_forward
- Compound A has molecular formula C7H7X. Its 1H-NMR spectrum shows a singlet at 2.25 ppm and two doublets, one at 7.28 ppm and one at 7.39 ppm. The singlet has an integral of three and the doublets each have an integral of two. The mass spectrum of A shows a peak at m/z = 126 and another peak at m/z = 128; the relative height of the two peaks is 3:1 respectively. Identify what atom X is, explaining your reasoning and identify Compound A, explaining your reasoning.arrow_forwardPolonium is a rare element with 33 radioisotopes. The most common one, P210o, has 84 protons and 126 neutrons. When P210o decays, it emits an alpha particle, which is a helium nucleus 2 protons and 2 neutrons. P210o decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. For example, they can be stopped by a single sheet of paper or a few inches of air. That is one reason why authorities failed to discover toxic amounts of P210o in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of P210o change into after it emits an alpha particle.arrow_forwardA sample was analyzed using mass spectrophotometer and molecular ion peak was obtained at m/z 120. Base peak was seen at m/z 91 and another peak of was observed at m/z 92. UV spectroscopic analysis revealed the presence of an aromatic ring. Determine the compound and justify your answer. And draw the mass spectrum.arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
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