(a)
Interpretation: The
Concept Introduction: Elements are the substances that contain same types of atoms. All known elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number. On the basis of valence shell electronic configuration, periodic table can be classified as s, p,
(b)
Interpretation: The atomic number and symbol of the heaviest metalloid in Group-5A (15), Period 6 should be identified.
Concept Introduction: Elements are the substances that contain same types of atoms. All known elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number. On the basis of valence shell electronic configuration, periodic table can be classified as s, p, d and f-block elements.
(c)
Interpretation: The
Concept Introduction: Elements are the substances that contain same types of atoms. All known elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number. On the basis of valence shell electronic configuration, periodic table can be classified as s, p, d and f-block elements.
(d)
Interpretation: The metalloid that is placed in Group 3A (13) should be identified.
Concept Introduction: Elements are the substances that contain same types of atoms. All know elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number. On the basis of valence shell electronic configuration, periodic table can be classified as s, p, d and f-block elements.
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EBK BASIC CHEMISTRY
- (10/west 4.4 4.4.1 Calcium reacts with chlorine to form calcium chloride. Draw the Aufbau diagram for a calcium ion. 4.4.2 Write down the chemical symbols of the particles found in the calcium chloride crystal lattice. 5.1 Define the term isotope. Atoms of the same element having the same number of protons, but different number of neutrons. Study the unknown elements A to E below: 5.2 A. 19 9 5.2.1 B. 19 10 C. 20 D. 21 11 E. 19 Which of the elements above are isotopes of each other? 5.2.2 Write down the name of this isotope. 5.3 Calculate the relative atomic mass of copper by using the following isotopes of copper: 636 Copper isotopes: 63 Cu-69% and 65 Cu-31% 163x69)(65x31) Classwork. QUESTION 3 Con 3.1 3.1.1. 3.1.2, 3.1.7 3.1. 100 4347 +2015. 10 100 63,62 5.4 Complete the table below. Write only the answer next to question number 5.4.1-5.4.5. Atomic Number of Number of Number of Element Fluoride ion 5.4.3 Mass number number protons neutrons electrons 5.4.1 9 9 5.4.2 10 25 5.4.4 12…arrow_forward4.121 Complete the following table: (4.3) Namere is ONE O tong of the Element bots he Magnesium Joghe amouse. The Atomic Symbolbo 80 Se 228 F 88 Ra Number of Protons 28 Number of Neutrons 34 14 Number of Electrons Avearrow_forwardMendeleev used chemical reactivity to determine how to organize the elements of the periodic table into groups and periods. Based on this knowledge, explain why his first table did not include the noble gases. (2 pts) Barrow_forward
- 28. Completely describe the orbitals found in the fourth energy level. How many electrons can be found in a full fourth energy level? Give an example of an element that has its valence electrons in the fourth energy level. (3.3) K/Uarrow_forward(3.6)Write the systematic names of compounds with lowercase letters except Roman Numerals. Roman number should be written with capital letters (I, II, III, IV, etc.). There should be no space between the end of the name of the metal and the parentheses with the Roman numeral. Example: CuO copper(II) oxide H₂CrO4(aq) SO3 acer H₂S(aq) FeN Sn3(PO3)2 1080arrow_forward(3.7)Classify each of the following as an atomic element, molecular element, molecular compound, or ionic compound. tin(IV) phosphide [Choose ] gold [Choose] carbon monoxide [Choose] V bromine [Choose ] < Previousarrow_forward
- 7. 8. 9. 10 11 12 13 F 14 P 15 P16 17 18 19 20 6.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 26. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 20.31 g water 4.16 g Use this information to find the molecular formula of X. Submit Assignn ontilyue Chparrow_forward(2.3) Which of the following pairs shows the law of multiple proportions? O All of these O C3H7Cl and C3H7N O CuCl₂ and MgCl₂ O FeO and Fe₂O3 ◄ Previousarrow_forwardThe relative ratio, or percent, of each isotope found in nature is the abundance number used to calculate the average mass. Here's the general equation for average atomic mass: (Abundance A)(Mass A) + (Abundance B)(Mass B) = Atomic Mass For example, here's how the average mass of of boron was calculated. Percent Boron-10 Percent Boron-11 10 + 11 =10.81 amu 100 100 (.20)10 + (.80)11 = 10.8 amu %D 3. Let's try out the atomic mass equation. Suppose you have a mixture of two nitrogen isotopes. For every 1 Nitrogen-15 isotopes, there are 3 Nitrogen-14 isotopes. Determine the abundance of each isotope in this mixture. Predict the average atomic mass of this mixture. Hint: This is NOT the mixture of nitrogen found in nature. You can check your answer by clicking "My Mixture" under isotope mixture. Next, create the mixture described in the problem. 14.50 amu 14.00 amu 14.25 amu 14.75 amuarrow_forward
- Fillarrow_forwardAnswer the following if True or False. (1-10) 1. Radioactivity emanates from stable isotopes of certain elements. * True False 2. Electrons are neutral sub-atomic particles of the atom. * True False 3. LASER is one kind of background radiation. * True False 4. Strong nuclear force holds atoms together. * True False 5. Tremendous amount of energy is released during fission reaction. * True False 6. Radioactive decay is a spontaneous process. * True False 7. X-ray, MRI, CT scan and ultrasound are medical imaging procedures that use radiation beams. * True False 8. In the electromagnetic spectrum, the lower the frequency the higher is the energy of radiation. * True False 9. Radiation can be in the form of particle and electromagnetic waves. * True False 10. Gamma rays can be stopped by a piece of paper. * True Falsearrow_forwardA metal ion with 2+ charge has 23 electrons and forms a compound with a halogen ion that contains 17 protons. (3)arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning