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
CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
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- (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a vanadium atom is 131 pm. What is this value in meters and in centimeters? cm (b) The mass of a single vanadium atom is 8.46×10-23 g. Suppose enough V atoms were lined up like beads on a string to span a distance of 44.7 cm ( 18 atoms inches). How many atoms would be required? What mass in grams of V would be used? Could you weigh out this amount of vanadium using a typical laboratory balance? (c) Taking the density of vanadium metal to be 6.08 g/cm³, calculate the mass of metal needed to form a piece of V wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is T times its radius squared times its height. (V = T r² h) How many vanadium atoms does this represent? atomsarrow_forward(a) In the certain hydrated salt MSO3⋅4H2O, the mass percentage of H2O is 44.71%. Identify the element M in the salt? (5 marks) (b) A certain element has two naturally occurring isotopes. (5 marks) The mass of one of the isotopes is 120.904 amu and its natural abundance is 57.21%. The mass of the second isotope is 122.904 amu. Calculate the average atomic mass Write the chemical symbols of the isotopesarrow_forward(d) the ion with 74 electrons, 116 neutrons, and a +3 chargearrow_forward
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