Concept explainers
(a)
Interpretation:
The characteristic that was used to organize elements in periodic table should be determined.
Concept introduction:
The element is simplest unit from matter that can’t be furthermore broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
(b)
Interpretation:
The name of horizontal row in periodic table should be determined.
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
(c)
Interpretation:
The name of vertical column in periodic table should be determined.
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
d)
Interpretation:
The name of groups from 1A-8A in periodic table should be determined.
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
(e)
Interpretation:
The name of groups from 1B-8B in periodic table should be determined.
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
(f)
Interpretation:
The classification of three elements
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
(e)
Interpretation:
The
Concept introduction:
The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.
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Chapter 2 Solutions
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