(a) Interpretation: The element with the largest atomic radius should be selected from the P, As and S. Concept introduction: From left to right across a period atomic size get decrees. From top to bottom across a group atomic size increase.
(a) Interpretation: The element with the largest atomic radius should be selected from the P, As and S. Concept introduction: From left to right across a period atomic size get decrees. From top to bottom across a group atomic size increase.
Solution Summary: The author explains that the element with the largest atomic radius should be selected from the P, As and S.
The element with the largest atomic radius should be selected from the P, As and S.
Concept introduction:
From left to right across a period atomic size get decrees. From top to bottom across a group atomic size increase.
Interpretation Introduction
(b)
Interpretation:
The one with the smallest radius should be selected from Xe, O2-, N3- and F-.
Concept introduction:
From left to right across a period atomic size get decrees. From top to bottom across a group atomic size increase.From left to right across a period atomic size get decrees. From top to bottom across a group atomic size increase.
Generally, adding electrons to atom to produce anion, increases it size. While removing electrons from atom to produce cation decrease it size.
Interpretation Introduction
(c)
Interpretation:
The one with the highest difference between 1st and 2nd ionization energy should be selected from Al, Si, P and Cl.
Concept introduction:
Ionization energies generally increase from left to right across the period and decreasing from top to bottom within a group.
Interpretation Introduction
(d)
Interpretation:
The one with the largest ionization energy should be selected from C, Si and Sn.
Concept introduction:
Ionization energies generally increase from left to right across the period and decreasing from top to bottom within a group.
Interpretation Introduction
(e)
Interpretation:
The one with the largest electron should be selected from Na, B, Al and C
Concept introduction:
Move across a row in the periodic table, from left to right the values of the electron affinities become more negative and move across up a column, the values of electron affinities become more negative.
From the given compound, choose the proton that best fits each given description.
a
CH2
CH 2
Cl
b
с
CH2
F
Most shielded:
(Choose one)
Least shielded:
(Choose one)
Highest chemical shift:
(Choose one)
Lowest chemical shift:
(Choose one)
×
Consider this molecule:
How many H atoms are in this molecule?
How many different signals could be found in its 1H NMR spectrum?
Note: A multiplet is considered one signal.
For each of the given mass spectrum data, identify whether the compound contains chlorine, bromine, or neither.
Compound
m/z of M* peak
m/z of M
+ 2 peak
ratio of M+ : M
+ 2 peak
Which element is present?
A
122
no M
+ 2 peak
not applicable
(Choose one)
B
78
80
3:1
(Choose one)
C
227
229
1:1
(Choose one)
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