(a)
Interpretation:
Names and
Concept introduction:
In chemistry, elements having similar chemical and physical properties are grouped together. According to Dalton’s atomic theory, elements are arranged according to their
(b)
Interpretation:
Names and symbols for four elements in each of the given categories have to be given.
Concept introduction:
In chemistry, elements having similar chemical and physical properties are grouped together. According to Dalton’s atomic theory, elements are arranged according to their atomic number in tabular arrangement. This table consists of vertical columns and horizontal row. Elements arranged in vertical columns called “groups” or “families” and elements in the horizontal row called “periods”. This tabular arrangement called “periodic table”.
(c)
Interpretation:
Names and symbols for four elements in each of the given categories have to be given.
Concept introduction:
In chemistry, elements having similar chemical and physical properties are grouped together. According to Dalton’s atomic theory, elements are arranged according to their atomic number in tabular arrangement. This table consists of vertical columns and horizontal row. Elements arranged in vertical columns called “groups” or “families” and elements in the horizontal row called “periods”. This tabular arrangement called “periodic table”.
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Chemistry: Atoms First V1
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- Write the symbol for each of the following ions. (Enter your answer in the form A X q± Z .) (a) the ion with a 3+ charge, 28 electrons, and a mass number of 69 (b) the ion with 36 electrons, 35 protons, and 44 neutrons (c) the ion with 91 electrons, 148 neutrons, and a 4+ charge (d) the ion with a 2+ charge, atomic number 40, and mass number 90arrow_forwardIdentify each of the following elements as a metal, non-metal, or metalloid: (a) gallium, (b) molybdenum, (c) tellurium, (d) arsenic, (e) xenon, (f) ruthenium.arrow_forwardFill in the blanks: (a) The symbol and atomic number of the heaviest alkaline earth metal are ______ and ______. (b) The symbol and atomic number of the lightest metalloid in Group 4A(14) are ______ and ______. (c) Group 1B(11) consists of the coinage metals. The symbol and atomic mass of the coinage metal whose atoms have the fewest electrons are ______ and ______. (d) The symbol and atomic mass of the halogen in Period 4 are ______ and ______.arrow_forward
- The elements of group 4A show an interesting change in properties moving down the group. Give the name and chemical symbol of each element in the group and label it as a nonmetal, metalloid, or metal.arrow_forwardAn unknown element contains 56 protons, 54 electrons, and has a mass number 135. Answer the following questions: (b) What are the name and symbol of this element? (d) What is the charge on this ion? Is it a cation or an anion?arrow_forwardEstimate the percentage of the total mass of a atom that is due to (a) electrons, (b) protons, and (c) neutrons by assuming that the mass of the atom is simply the sum of the masses of the appropriate numbers of subatomic particles. The mass of an electron is 0.00054858 amu, the mass of a proton is 1.0073 amu, and the mass of a neutron is 1.0087 amu.arrow_forward
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