(a)
Interpretation:
The element which is most metallic should be selected from the Bi, S, Ba, As and Ca.
Concept introduction:
The most metallics are present in the left corner of the periodic table.
(b)
Interpretation:
The element which is most nonmetallic should be selected from the Bi, S, Ba, As and Ca.
Concept introduction:
the most nonmetallic are present in the right corner of the periodic table.
(c)
Interpretation:
The element which has the intermediate value when the five are arranged in order of increasing 1st ionization energy should be selected from the Bi, S, Ba, As and Ca.
Concept introduction:
Ionization energies generally increase from left to right across the period and decreasing from top to bottom within a group.
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General Chemistry: Principles and Modern Applications (11th Edition)
- 2.(a) Write the full electron configuration for each of Ge and Ge3-2.(b) Write the noble gas configuration, and valence configuration of Ge 2.(c) Write the orbital diagram for the Ge3-2.(d) For the unpaired electron in the orbital diagram for the Ge3-ion, give its four quantum numbersn,l,ml,ms 2.(e) Is Ge3+ diamagnetic or paramagnetic?arrow_forwardQ1. 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_forwardWhich element would you expect to be more metallic?(a) Ca or Rb(b) Mg or Ra(c) Br or Iarrow_forward
- Identify the true statements concerning the atoms andions of the group 6A elements. (a) The ionic radii are larger than the atomic radii becausethe ions have more electrons than their correspondingatoms.(b) Atomic radii increase going down the group because ofincreasing nuclear charge.(c) The ionic radii increase going down the group becauseof the increase in the principal quantum number ofoutermost electrons.(d) Of these ions, Se2- is the strongest base in water becauseit is largest.arrow_forward(a) Rank elements: Na, Mg, Al, and K, in increasing order of: (i) atomic size; (ii) ionization energy, and (iii) reactivity. (b) Explain why atomic size decreases from left to right, but increases from top to bottom; (c) Explain why ionization energy increases from left to right, but decreases from top to bottom; (d) Explain why the reactivity of alkali metals (Group-1) increases from top to bottom, where as the reactivity of halogen (Group-17) decreases from top to bottom.arrow_forward(a) Describe the trends of atomic size and ionization energy, respectively, in the Periodic Table: (1) from left to right across a period, and (ii) from top to bottom down a group. (b) Rank the following elements: Na, Mg, Al, and K, in increasing order of: (i) atomic size; (ii) ionization energy, and (iii) reactivity. (c) Rank the following elements: F, CI, Br and I, in increasing order of: (i) atomic size; (ii) electron affinity, (iii) electronegativity, and (iv) reactivity.arrow_forward
- . (i) Give a detailed explanation why both anions and cations have different sizes compared to their parent atoms. (ii) Arrange the following series of ions in order of increasing size, and give the reason behind your answer. Ca2+, S2−, K+ , Cl−arrow_forwardBoron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively. (a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Draw the orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons in boron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation for the reaction of solid boron with fluorine gas. (e) ΔHf° for BF3(g) is -1135.6 kj/mol. Calculate the standard enthalpy change in the reaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?arrow_forward(c) Silicon (Si) is the most common chemical element in today's semiconductor industry. It has an atomic number of 14 and belongs to the Group IV (4) of the periodic table with its most common isotope being Si-29. (i) (ii) (iii) Explain what an isotope is. How many protons and how many neutrons are in the nucleus of this Silicon isotope? What is the electron configuration of Si?arrow_forward
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