Homework Answers
Answer. Ion with an charge of +2.
It means there is loss of electrons. Hence, the number of electrons will be less than the number of protons. So, the correct option is C.
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Which of the following best describes an ion with a charge of +27 (A. It has...
An ion has a mass number of 65, 36 neutrons, and a charge of +1. Identify...
An ion has a mass number of 65, 36 neutrons, and a charge of +1. Identify the element symbol, and determine the number of protons and electrons in this ion. element symbol: number of protons: number of electrons:
A Se ion has a mass number of 75 and a charge of −2 . Determine...
A Se ion has a mass number of 75 and a charge of −2 . Determine the number of neutrons, protons, and electrons in this ion.
Multiple-Cholce: Select the best answer to each of these multiple choice 1. Which of the following...
Multiple-Cholce: Select the best answer to each of these multiple choice 1. Which of the following descriptions of a subatomic particle is correct? a) A proton has appositive charge and a mass of approximately 1 amu 9. b) An electron has a negative charge and a mass of approximately 1 amu c) A neutron has no charge and its mass is negligible d) A proton has appositive charge and a negligible mass. e) A neutron has appositive charge and a...
Which of the following correctly describes an isotope? (Select all that apply.) They have the same...
Which of the following correctly describes an isotope? (Select all that apply.) They have the same atomic number, but different mass number. They have the same atomic number, but different number of electrons. They have the same mass number, but different atomic number. They have the same mass number, but different number of neutrons. They have the same mass number, but different number of protons. They have the same mass number, but different number of electrons. They have the same...
A species that differs in charge from another atom of the same element: A) is called...
A species that differs in charge from another atom of the same element: A) is called an isotope B) has more or less neutrons C) has lost or gained electrons D) is called an ion E) has the same number of protons I need to know why the incorrect answers are incorrect. Thanks!
which of the following statements about isotopes is false Which of the following statements about isotopes...
which of the following statements about isotopes is
false
Which of the following statements about isotopes is false? Select one: O a. An isotope with more neutrons will have a greater mass than an isotope with fewer neutrons. O b. All of the above are true. c. Isotopes are atoms with same number of protons but different numbers of neutrons. d. Isotopes are atoms with the same atomic number but different mass numbers. O e. Most elements naturally have more...
1- an atom has the following chemical symbol: 114Cd a- how many protons does this atom...
1- an atom has the following chemical symbol: 114Cd a- how many protons does this atom have? b- how many neutrons does this atom have? c- how many electrons does this atom have? 2- an ion has 33 protons, 41 neutrons, and 36 electrons a- what is the mass number of this atom? b- what is the symbol for this ion? enter both mass and the atomic number 3- which of these ions has the same number of electrons as...
1. (2 pts) Given the name or symbol for an element and its mass#, Fill in...
1. (2 pts) Given the name or symbol for an element and its mass#, Fill in the table: Element # protons # neutrons # electrons 87Rb+ 128Te-2 2. (3 pts) Write the correct symbol and charge for the following: An atom with 47 protons, mass number 107, and 46 electrons. An atom with 2 more electrons than protons, mass number 80, and 46 neutrons. Write the atomic symbol for the element whose ion has a 2- charge, has 20 more...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses,...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses, and theories are tentative explanations. D) Hypotheses are derived from experimentation, whereas theories are derived from observation. 12) A) Water is an example of an element. B Nitrogen C) Glucose D) Salt 13) What are the four most common elements found in living organisms? A) nitrogen, oxygen, phosphorus, and carbon carbon, oxygen, nitrogen, and hydrogen C) carbon, oxygen, potassium, and calcium D) oxygen, calcium,...
Consider three metal spheres, A, B and C. A has the same number of electrons and...
Consider three metal spheres, A, B and C. A has the same number of electrons and protons. B has 1.88x1020 fewer electrons than protons. C has 1.25x1020 more electrons than protons. a) What is the charge (in MKS units) on each sphere? b) What is the total charge on all of the spheres? Touch A to B and separate them. Then touch B to C and separate them. Finally touch C to A and separate them. c) What is the...
An ion has a mass number of 65, 36 neutrons, and a charge of +1. Identify the element symbol, and determine the number of protons and electrons in this ion. element symbol: number of protons: number of electrons:
Multiple-Cholce: Select the best answer to each of these multiple choice 1. Which of the following descriptions of a subatomic particle is correct? a) A proton has appositive charge and a mass of approximately 1 amu 9. b) An electron has a negative charge and a mass of approximately 1 amu c) A neutron has no charge and its mass is negligible d) A proton has appositive charge and a negligible mass. e) A neutron has appositive charge and a...
which of the following statements about isotopes is
false
Which of the following statements about isotopes is false? Select one: O a. An isotope with more neutrons will have a greater mass than an isotope with fewer neutrons. O b. All of the above are true. c. Isotopes are atoms with same number of protons but different numbers of neutrons. d. Isotopes are atoms with the same atomic number but different mass numbers. O e. Most elements naturally have more...
B) Theories must be testable; hypotheses do not need to be testable. CHypotheses are educated guesses, and theories are tentative explanations. D) Hypotheses are derived from experimentation, whereas theories are derived from observation. 12) A) Water is an example of an element. B Nitrogen C) Glucose D) Salt 13) What are the four most common elements found in living organisms? A) nitrogen, oxygen, phosphorus, and carbon carbon, oxygen, nitrogen, and hydrogen C) carbon, oxygen, potassium, and calcium D) oxygen, calcium,...
Consider three metal spheres, A, B and C. A has the same number of electrons and protons. B has 1.88x1020 fewer electrons than protons. C has 1.25x1020 more electrons than protons. a) What is the charge (in MKS units) on each sphere? b) What is the total charge on all of the spheres? Touch A to B and separate them. Then touch B to C and separate them. Finally touch C to A and separate them. c) What is the...
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