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Concept explainers
(a)
Interpretation:
Whether the elements become more metallic or less metallic on moving down a group in the periodic table is to be stated.
Concept introduction:
Those elements that have tendency to form positive ion by losing electrons are called metals. So, metals are electropositive elements. The elements that have tendency to form anions by gaining electrons are called nonmetal. So, nonmetals are electronegative elements.
(b)
Interpretation:
Whether the elements become more metallic or less metallic on moving left to right across a period in the periodic table is to be stated.
Concept introduction:
Those elements that have tendency to form positive ion by losing electrons are called metals. So, metals are electropositive elements. The elements that have tendency to form anions by gaining electrons are called nonmetal. So, nonmetals are electronegative elements.
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Chapter 11 Solutions
Introductory Chemistry: An Active Learning Approach
- Q1. This question is about atomic structure. (a) Write the full electron configuration for each of the following species. CH Fe2+ (b) Write an equation, including state symbols, to represent the process that occurs when the third ionisation energy of manganese is measured. (c) State which of the elements magnesium and aluminium has the lower first ionisation energy Explain your answer. (d) A sample of nickel was analysed in a time of flight (TOF) mass spectrometer. The sample was ionised by electron impact ionisation. The spectrum produced showed three peaks with abundances as set out in the table. m/z Abundance /% 58 61.0 60 29.1 61 9.9 Give the symbol, including mass number, of the ion that would reach the detector first in the sample. Calculate the relative atomic mass of the nickel in the sample. Give your answer to one decimal place. Page 2 of 12 Symbol of ion Relative atomic massarrow_forwardCan you answer part Barrow_forward(a) Identify the number of electrons in the ground-state outer shell of atomic oxygen (atomic number 8).(b) How many electrons are in the ground-state outer shell of fluorine?arrow_forward
- (b) A new element, "X", is discovered and found to have 2 electrons in its outer level. Is X a metal or non-metal? Predict the formula its ion would have in any ionic compounds it forms.arrow_forward28. (a) In Figure P7.7, which sphere could represent a Na atom, Nation, and K atom? Provide an explanation for your choice. (b) In Figure P7.7, which sphere could represent an O atom, S atom, and S2- ion? Provide an explanation for your choice. FIGURE P7.7 (b) (c)arrow_forwardQuestion:Consider two elements, Element A and Element B, from the periodic table. Element A is located in Group 1 and Period 3, while Element B is located in Group 16 and Period 2. (a) Which element would have a larger atomic radius, Element A or Element B? Justify your answer. (b) Predict the ionization energy of Element A and Element B. Which element would have a higher ionization energy? Explain your reasoning. (c) Based on their positions in the periodic table, which element would be more likely to form a stable cation? Provide a brief explanation for your choice.arrow_forward
- Choose one group of representative elements (main group elements) and discuss its chemistry by specifying (i) one of its properties, (ii) citing one important reaction that one member of the group undergoes (write the chemical equation), and (iii) mentioning one of the applications/uses of the members of the group. Your answers to i-iii must consist of no more than 20 words each.arrow_forward(1) What is the valence electron configuration for the neon atom? (2) What is the valence electron configuration for the sulfur atom?arrow_forwardvi. Answer true or false. (a) Elements in the same column of the Periodic Table have the same outer-shell electron configuration. (b) All Group 1A elements have one electron in their valence shell. (c) All Group 6A elements have six electrons in their valence shell. (d) All Group 8A elements have eight electrons in their valence shell. (e) Period 1 of the Periodic Table has one element, period 2 has two elements, period 3 has three elements, and so forth. (1) Period 2 results from filling the 2s and 2p orbitals and, therefore, there are eight elements in period 2. (g) Period 3 results from filling the 3s, 3p, and 3d orbitals and, therefore, there are nine elements in period 3. (h) The main-group elements are s block and p block elements.arrow_forward
- 15. (a) b) Identify the element that is described by the following information. Refer to a periodic table if necessary. It is a group 14 (III A) metalloid in the 3rd period. It is a group 15 (VA) metalloid in the 5th period. It is the other metalloid in group 15 (VA). d) It is a halogen that exists in the liquid state at room temperature. 16. What is the relationship between electron arrangement and the organization of elements in the periodic table?arrow_forward(a) Write out the full electron configuration of Calcium (Ca). (b) How many electrons are in the n=3 shell of Calcium?arrow_forwardArrange in order of increasing nonmetallic character. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) the Period 4 elements V, Ge, and K (b) the Group 5A elements N, As, and Bi Arrange in order of increasing atomic size. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) the Period 3 elements Mg, Si, and Ar (b) the Group 2A elements Ca, Ba, and Srarrow_forward
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