-11 8onus THE ELECTRONIC STRUCTURE OF ATOMS 8. Based on the relationship between
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-11 8onus THE ELECTRONIC STRUCTURE OF ATOMS 8. Based on the relationship between electron configurations and the periodic table, indicate which elements coatain the electron characteristics below. In those cases where a series of elements have the indicated characteristics you need not write all the symbols but rather may wrine the atomic numbers of the first and last elements in the series, i.e, elements 70-83 a. a total of 82 electrons L. Indicate whether each of the following statements is true r An arbital has a definite size and shape, which are related to the energy of the electrons it could contain.e The M and n-3 shells are one and the same. e. All of the orbitals in a subshell have the same energy d. All of the subshells in a shell have the same energy co e. A 2p and 3p subshell would contain the same number of c. two 7s (note that more than one electroe A d subshell always contains five orbitals. f g An s orbital is shaped something like a four-leaf clover h The n-3 shell can accommodate a maximum of 18 d. a total of fifneen" electrons (they are not all in the electrons. Re The fourth shell is made up of six subshells,e All subshells accommodate the same number of electrons e. only one electroo in shell 7 f a total of six "s" electrons (mote that more thas one j. element qualifies) Give the maximum number of electrons that may occupy each ofthe following units. 2. 9. Referring only to the periodie table, determine the element of lowest atomic number whose electron configuration contains the following a two completely filled d subshells a b. four completely filled s subshellso c. foar completely filled s orbitals d. four completely filled p orbitals 2p subshell b2portital6 e. third shell 18 d. Lshell 8 3. For each of the following sets of subshells determine the one of lowest energy and the one of highest energy.54pLdcf e. two,completely filled shells f. four completely filled shells b. arsusExplanation / Answer
Q7
a)
3s begins filling --> left side of th eperiodi ct table, this is group 1, therefore Na
b)
4d subshell starts being filled --> this is transition metals --> this is Sc, scnadium
c)
4psubshell has been half filled --< this is Tc, Tecnecium
d)
5p, becomes completely filled --> this must be noble gas, present in the 8th column, that is, Xeonon
e)
5th subshell begins to fill --> first element in Row 5 --> Rb
f)
3rd shell copmlestes filled
this must be 3p --> this is a noble gas, choose Argon
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