Homework Answers
Answer
Option A) 12 protons
- Atomic number is the number of protons in an atom.
- It is represented as Z.
- Hence, if atomic number is 12, then the atom would have 12 protons.
- Atomic number when added to the number of neutrons gives atomic mass.
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2 pts Question 12 If atom X has an atomic number of 12, then it would...
1. An atom of nitrogen with a mass number of 15 and an atomic number of...
1. An atom of nitrogen with a mass number of 15 and an atomic number of 7 has a total of neutrons. 2. An atom of potassium with a mass number of 39 and an atomic number of 19 has a total of neutrons 13 17 18 15 19 20 24 35 3. An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total of neutrons. 4. An atom of oxygen with...
Atoms and Isotopes 1 Activity: Atoms and Isotopes Why? Atoms and isotopes are identified by the...
Atoms and Isotopes 1 Activity: Atoms and Isotopes Why? Atoms and isotopes are identified by the numbers of protons, electrons, and neutrons that they contain The number of protons, electrons, and neutrons in atoms determines the chemical properties of the elements .A knowledge of the number of protons and electrons in an atom will help you understand how atoms combine to form molecules Identify the composition of atoms in terms of protons, neutrons, and electrons Use atomic symbols to represent...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Question 12 2 pts Carbon has an atomic number of 6. This means it has 6...
Question 12 2 pts Carbon has an atomic number of 6. This means it has 6 protons and 6 electrons. How many valence electrons does carbon have? 2 pts Question 13 What is the major difference between ionic and covalent bonds?
Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers from 92-100....
Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers from 92-100. Which of the following is a true statement about an atom of molybdenum? A. It might have between 50 and 58 protons. B. It might have between 50 and 58 neutrons. C. The number of protons and the number of neutrons must be the same. OD. It might have between 50 and 58 electrons.
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures)...
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures) is 30.2 O 30 30.209 30.21 Question 44 2 pts Given: H2S, H2SO4, H2SO3, HBrO4. Which of these are strong acids? O H2SO4 H2S H2SO4 H2SO3, and HBrO4 H2S, H2SO4, and H2SO3 Question 45 2 pts Which 1M solution would have the lowest pH? NaBr OKOH Sr(OH)2 O HNO3 Question 46 2 pts Isotopes of a given element have different number of neutrons but...
-Isotopes are represented by the symbol , where Z is the atomic number, A is the...
-Isotopes are represented by the symbol , where Z is the atomic number, A is the mass number, and E is the elemental symbol. . Write symbol that represents an isotope of nickel that contains 28 protons and 32 neutrons in the nucleus. Isotopes are also represented by the notation: Name-A, where Name is the name of the of the isotope. An example of this isotope notation is magnesium-26. This represents an isotope of The extremely small size of atoms...
Please fill out the chart. Table III-A. Atomic Number, Number of protons, Number of Neutrons and...
Please fill out the chart.
Table III-A. Atomic Number, Number of protons, Number of Neutrons and Neutron-to-Proton Ratio for Some Stable Isotopes. Number of Number of Neutron-to-Proton Stable Isotope Atomic Number Protons Neutrons Ratio Helium-4 4 2 2 Carbon-12 6 6 6 Silicon-28 14 14 14 Scandium-45 Iron-56 Cobalt-59 Strontium-88 Silver-109 lodine 127 Gadolinium-160 Lead-206 Table III-B. Atomic Number, Number of protons, Number of Neutrons and Neutron-to-Proton Ratio for Some Unstable Isotopes. Number of Number of Neutron-to-Proton Unstable Isotope Atomic...
Question 3 0.5 pts An iron atom with a charge of +3 and an atomic weight...
Question 3 0.5 pts An iron atom with a charge of +3 and an atomic weight of 53 has protons, (Select] ISelect ] neutrons, and I Select ] electrons.
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How...
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How many neutrons are present in this nuclide? 92 177 143 235 Question 13 The atomic mass of an atom is the number of ___in that particular atom. o neutrons protons protons plus neutrons o electrons Question 14 The ratio of isotopes for a given element can be measured instrumentally using a isotopometer mass spectrometer oratiometer spectrophotometer
1. An atom of nitrogen with a mass number of 15 and an atomic number of 7 has a total of neutrons. 2. An atom of potassium with a mass number of 39 and an atomic number of 19 has a total of neutrons 13 17 18 15 19 20 24 35 3. An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total of neutrons. 4. An atom of oxygen with...
Atoms and Isotopes 1 Activity: Atoms and Isotopes Why? Atoms and isotopes are identified by the numbers of protons, electrons, and neutrons that they contain The number of protons, electrons, and neutrons in atoms determines the chemical properties of the elements .A knowledge of the number of protons and electrons in an atom will help you understand how atoms combine to form molecules Identify the composition of atoms in terms of protons, neutrons, and electrons Use atomic symbols to represent...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Question 12 2 pts Carbon has an atomic number of 6. This means it has 6 protons and 6 electrons. How many valence electrons does carbon have? 2 pts Question 13 What is the major difference between ionic and covalent bonds?
Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers from 92-100. Which of the following is a true statement about an atom of molybdenum? A. It might have between 50 and 58 protons. B. It might have between 50 and 58 neutrons. C. The number of protons and the number of neutrons must be the same. OD. It might have between 50 and 58 electrons.
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures) is 30.2 O 30 30.209 30.21 Question 44 2 pts Given: H2S, H2SO4, H2SO3, HBrO4. Which of these are strong acids? O H2SO4 H2S H2SO4 H2SO3, and HBrO4 H2S, H2SO4, and H2SO3 Question 45 2 pts Which 1M solution would have the lowest pH? NaBr OKOH Sr(OH)2 O HNO3 Question 46 2 pts Isotopes of a given element have different number of neutrons but...
-Isotopes are represented by the symbol , where Z is the atomic number, A is the mass number, and E is the elemental symbol. . Write symbol that represents an isotope of nickel that contains 28 protons and 32 neutrons in the nucleus. Isotopes are also represented by the notation: Name-A, where Name is the name of the of the isotope. An example of this isotope notation is magnesium-26. This represents an isotope of The extremely small size of atoms...
Please fill out the chart.
Table III-A. Atomic Number, Number of protons, Number of Neutrons and Neutron-to-Proton Ratio for Some Stable Isotopes. Number of Number of Neutron-to-Proton Stable Isotope Atomic Number Protons Neutrons Ratio Helium-4 4 2 2 Carbon-12 6 6 6 Silicon-28 14 14 14 Scandium-45 Iron-56 Cobalt-59 Strontium-88 Silver-109 lodine 127 Gadolinium-160 Lead-206 Table III-B. Atomic Number, Number of protons, Number of Neutrons and Neutron-to-Proton Ratio for Some Unstable Isotopes. Number of Number of Neutron-to-Proton Unstable Isotope Atomic...
Question 3 0.5 pts An iron atom with a charge of +3 and an atomic weight of 53 has protons, (Select] ISelect ] neutrons, and I Select ] electrons.
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How many neutrons are present in this nuclide? 92 177 143 235 Question 13 The atomic mass of an atom is the number of ___in that particular atom. o neutrons protons protons plus neutrons o electrons Question 14 The ratio of isotopes for a given element can be measured instrumentally using a isotopometer mass spectrometer oratiometer spectrophotometer
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