3. Describe the processes involved in extracting caesium metal from natural minerals. 4. Explain why compounds...
3. Describe the processes involved in extracting caesium metal from natural minerals.
4. Explain why compounds of beryllium are mainly covalent whereas those of the other Group 2 elements are predominantly ionic.
Homework Answers
3) Caesium metal is extracted from mineral by treating with sulfuric acid which yields the insoluble double salt directly as caesium alum (CsAl(SO4)2·12H2O). The aluminium sulfate is converted to insoluble aluminium oxide by roasting the alum with carbon, and the resulting product is leached with water to yield a Cs2SO4 solution.
4) Beryllium is small in size and has high charge to radii ratio whereas other are large in size thus Beryllium form covalent compound.
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3. Describe the processes involved in extracting caesium metal
from natural minerals.
4. Explain why compounds...
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Periodic Trends in Group
II
Objective
In this experiment, the trend in one of the several periodic
properties for group II of the Periodic Table will be
determined.
Introduction
Elements in the same group of the Periodic Table have similar
chemical and physical properties that gradually change as one goes
from one element in the group to the next. By observing the trends
in properties, the elements can be arranged in the order in which
they appear in the Periodic...
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Please answer the questions too. Thanks.
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Periodic Trends in Group
II
Objective
In this experiment, the trend in one of the several periodic
properties for group II of the Periodic Table will be
determined.
Introduction
Elements in the same group of the Periodic Table have similar
chemical and physical properties that gradually change as one goes
from one element in the group to the next. By observing the trends
in properties, the elements can be arranged in the order in which
they appear in the Periodic...
3. Unpolluted rain has an approximate pH of 5.5. Natural emissions (from volcanoes and lightning), and human activity (from mining and industrial plants) emit compounds that mix with water vapor in the atmosphere to create "acid rain," which can have a pH-4.5. Referring to the pH equation, explain why decreasing pH numbers mean that the acidity is increasing. a. Referring to the pH equation, explain why more acidic solutions have lower pH values. b. Referring to the pH equation, explain...
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