(a)
Interpretation:
The elements with least first ionization energy in periodic table has to be circled.
Concept introduction:
Ionization energy:
In a gaseous state isolated neutral atom, the amount of energy required to eject an electron from outermost shell is known as ionization energy. Ionization energy increases from left to right across periods due to increase of effective nuclear charge. Ionization energy decreases down the group due to addition of electrons enters into new orbital which is far from nucleus.
(b)
Interpretation:
The elements with greatest atomic radii in periodic table has to be circled.
Concept introduction:
Atomic radii:
The distance between center of nucleus and outer most orbital in an atom is called as atomic radii. Addition of electrons leads to accumulation of electrons in new orbital which increases atomic radii. Down the group atomic radii increases.
(c)
Interpretation:
The elements with most negative value of
Concept introduction:
Electron affinity:
In a gaseous state isolated neutral atom, energy released when an electron is introduced in outermost shell is known as electron affinity. Greater the negative value of electron affinity, the atom has more tendency to accept an electron.
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General Chemistry: Atoms First
- 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_forwardCircle the approximate part or parts of the periodic table where the following elements appear. (a) Elements with the smallest values of Ea (b) Elements with the largest atomic radil (c) Elements with the most negative values of Ea Drag the appropriate labels to their respective targets. Labels with E should be placed inside the table. Group 2 Group 2 Group 1 Group T the smallest values of Ea Group 1 Group t the largest atomic radi Group-1 Group 1 the most negative values of E Group 2 Group Group 1 Group T Group-1 Group T Group 1 Group 1 Group t Group T Group 1 Group 1 Group T Group 1 Reset Help Group 2arrow_forwardFor each of the following pairs of elements (C and N) and (Ar and Br), pick theatom in the pair that has C or N Ar or Br(i) the more exothermic electron affinity:(ii) the higher ionization energy:(iii) the larger atomic radius:arrow_forward
- Choose the element with the higher ionization energy from each pair.(a) Al or In (b) Cl or Sb (c) K or Ge (d) S or Searrow_forwardRank the elements in each of the following sets in order of increasing atomic radius. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) Na, Li, H, Rb (b) S, Ar, Si, Alarrow_forwardWhich element would you expect to be more metallic?(a) Ca or Rb(b) Mg or Ra(c) Br or Iarrow_forward
- What are ionization energy for atoms : (a) Sr (b) P (c) Rbarrow_forward1. An element has the following electronic configuration: [Kr]4d105s25p4(a) What period does it belong to?(b) What is its group number? (Use group numbers from 1 to 18)(c) What kind of element is it? (Main group metal, transition metal, metalloid, nonmetal?)(d) How many unpaired electrons are there in an atom of this element? 3. (a) Which of the following atoms or ions is diamagnetic?Li+ Ni2+ Al Fe2+ Mn3+(b) Which of the following atoms or ions is paramagnetic?C4- S4+ V4+ Se2- Ge4+arrow_forwardIdentify the specific element that corresponds to each of the following electron configurations. (Type your answer using the symbol of the element.) (a) [He]2s²2p2 (b) [He]2s²2p! (c) [Rn]7s25f 46di (d) [He]2s!arrow_forward
- Select the ions or atoms from the following sets that are isoelectronic with each other (a) OS O K* (b) O Co3+ O Fe2+ O Mn2+ (c) O CI - OF Ar (d) A13+ O p3- O Na+arrow_forwardWhich of the following statements is incorrect? (a) The second ionization energy of sulphur is greater than that of chlorine (b) The third ionization energy of phosphorus is greater than that of aluminium (c) The first ionization energy of aluminium is approximately the same as that of gallium (d) The second ionization energy of boron is greater than that of carbon a b O darrow_forward34. According to general trends in the periodic table, predict which element in each of the following pairs has the greater metallic character. (b) Na or K (d) H or Fe (a) B or Al (c) Mg or Ba 1istarrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning