Interpretation:
The reason for difference in values between first and second
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their
In periodic table the horizontal rows are called periods and the vertical column are called group.
In periodic table the horizontal rows are called periods and the vertical column are called group. There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Atomic Number: Atomic number of the element is equal to the number of protons present in the nucleus of the element which is denoted by symbol Z. The superscript presents on the left side of the
Electron affinity: It is defined as the process where the energy gets released or observed when an electron gets added to the isolated gaseous state which results in the formation of negative ion.
To explain: The reason behind the electron affinity values for the given element.
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Chemistry: Atoms First
- Consider the following set of successive ionization energies: IE1=578kJ/mol IE2=1,820kJ/mol IE3=2,750kJ/mol IE4=11,600kJ/mol To which third-period element do these ionization values belong?arrow_forwardWhich element from row 2 will have the following ionization energies? IE1 = 1086 kJ, IE2 = 2353 kJ, IE3 = 4621 kJ, IE4 = 6223 kJ, IE5 = 37831 kJ Berylium Boron Carbon Nitrogenarrow_forwardCesium has 1 valence electron. How many possible bonds can be formed and why?arrow_forward
- Arrange these elements according to electron affinity. Br S Ararrow_forwardTo which third period element do these ionization values belong?arrow_forwardPlatinum hexafluoride, PtF6 has a very high electron affinity (772 kJ/mol) but when lithium metal is reacted with platinum hexafluoride it is lithium fluoride Li+F- that is produced not Li+PtF6- that is formed. Suggest a reason why.arrow_forward
- Consider the following information. • The enthalpy of formation of MgO is AH; = -601.6 kJ/mol. • The enthalpy of sublimation of Mg is AHsub = 147.1 kJ/mol. • The first and second ionization energies of Mg are IE1 = 738 kJ/mol and IE2 = 1450 kJ/mol. • The first electron affinity of O is AHEA1 = -142 kJ/mol. • The bond energy of O, is BE = 498 kJ/mol. • The lattice energy of MgO is AHjattice -3795 kJ/mol. Determine the second electron affinity of O. AHEA2 = kJ/molarrow_forwardFill in the orbital energy diagram for sulfur. Зр 3s E 2p 2s 1s > >arrow_forwardSpecies that have the same number of electrons are described as isoelectronic. What +2 ion is isoelectronic with Na+? What −2 ion?arrow_forward
- What ions are possible for the two largest stable elements in Group 4A(14)? How does each arise?arrow_forwardHow does ionisation energy change going down group 2 and why?arrow_forwardAn atom with a stronger electron affinity is often more reactive. Given a pressurized chamber containing H2, which species would you expect to react more with hydrogen, Cl or Br? Explain.arrow_forward
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