Concept explainers
(a)
Interpretation:
True and false
Elements in the same column of the periodic table have the same-outer shell electron configuration.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and
(b)
Interpretation:
True and false
All group 1A elements have one electron in their valence shell.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(c)
Interpretation:
True and false
All group 6A elements have eight electrons in their valence shell.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(d)
Interpretation:
True and false
All group 8A elements have eight electrons in their valence shell.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(e)
Interpretation:
True and false
In the periodic table, Period 1 has one element, Period 2 has two elements, Period 3 has three elements and so forth.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(f)
Interpretation:
True and false
Period 2 results from filling the 2s an 2p orbitals and therefore, there are eight elements in period 2.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(g)
Interpretation:
True and false
Period 3 results from filling the 3s, 3p and 3d orbitals, and therefore, there are nine elements in Period 3.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
(h)
Interpretation:
True and false
The main group elements are s block and p block elements.
Concept Introduction:
The periodic table of an element is the chemical element’s tabular arrangement structured according to their electronic configuration, chemical properties and atomic number. Usually in one period or row towards the left elements are metal and non-metal towards the right having the elements with same chemical properties are kept in the same column. Table column are known as groups and table rows are known as periods.
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Chapter 2 Solutions
Introduction to General, Organic and Biochemistry
- 2-59 You are presented with a Lewis dot structure of element X as X.. To which two groups in the Periodic Table might this element belong?arrow_forward2-43 Which group(s) of the Periodic Table contain(s): (a) Only metals? (b) Only metalloids? (c) Only nonmetals?arrow_forward2-44 Which period(s) in the Periodic Table contain(s) more nonmetals than metals? Which contain(s) more metals than nonmetals?arrow_forward
- 3-58 In Section 2-3B, we saw that there are seven diatomic elements. (a) Draw Lewis structures for each of these diatomic elements. (b) Which diatomic elements are gases at room temperature? Which are liquids? Which are solids?arrow_forward2-64 Consider the elements B, C, and N. Using only the Periodic Table, predict which of these three elements has: (a) the largest atomic radius. (b) the smallest atomic radius. (c) the largest ionization energy (d) the smallest ionization energyarrow_forward2-73 (Chemical Connections 2D) Copper is a soft metal. how can it be made harder?arrow_forward
- 2-67 Account for the fact that the first ionization energy of oxygen is less than that of nitrogen.arrow_forward2-47 Which element in each pair is more metallic? (a) Silicon or aluminum (b) Arsenic or phosphorus (c) Gallium or germanium (d) Gallium or aluminumarrow_forward2-69 (Chemical Connections 2A) Why does the body need sulfur, calcium, and iron?arrow_forward
- 2-94 Using your knowledge of trends in element sizes in going across a period of the Periodic Table, exp lain why the density of the elements increases from potassium through vanadium. (Recall from Section 1-7 that specific gravity is numerically the same as density but has no units.) Element Specific Gravity K 0.862 Ca1.55 Se 2.99 Ti 4.54 V 6.11arrow_forward2-23 It has been said, “The number of protons determines the identity of the element.” Do you agree or disagree with this statement? Explain.arrow_forward2-99 A 7.12 g sample of magnesium is heated with 1.80 g of bromine. All the bromine is used up, and 2.07 g of magnesium bromide is produced. What mass of magnesium remains unreacted?arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning