compare the number of protons, neutrons, electrons, and nucleons for the two isotopes: li - 6 li - 7 number…

compare the number of protons, neutrons, electrons, and nucleons for the two isotopes: li - 6 li - 7 number of protons __1__ __2__ number of neutrons __3__ __4__ number of electrons __5__ __6__ number of nucleons __7__ __8__ chemical reactions only involve the outermost electrons. the two isotopes of lithium are expected to have the same chemical properties because they have the same number of __9__ and protons. it is only __10__ that are involved in chemical reactions. thus, __11__ do not affect chemical reactivity. the number of protons affects chemical properties because the number of protons determines the number of __12__ in an element. a. 3 b. 4 c. 5 d. 6 e. 7 f. electrons g. protons h. nucleons i. neutrons

compare the number of protons, neutrons, electrons, and nucleons for the two isotopes: li - 6 li - 7 number of protons __1__ __2__ number of neutrons __3__ __4__ number of electrons __5__ __6__ number of nucleons __7__ __8__ chemical reactions only involve the outermost electrons. the two isotopes of lithium are expected to have the same chemical properties because they have the same number of __9__ and protons. it is only __10__ that are involved in chemical reactions. thus, __11__ do not affect chemical reactivity. the number of protons affects chemical properties because the number of protons determines the number of __12__ in an element. a. 3 b. 4 c. 5 d. 6 e. 7 f. electrons g. protons h. nucleons i. neutrons

Answer

Explanation:

Step1: Recall atomic number of lithium

Lithium (Li) has an atomic number of 3. The number of protons is equal to the atomic number. So for both Li - 6 and Li - 7, the number of protons is 3.

  1. A
  2. A

Step2: Calculate number of neutrons

The mass - number is the sum of protons and neutrons. For Li - 6, mass - number = 6, and number of protons = 3, so number of neutrons = 6 - 3=3. For Li - 7, mass - number = 7, and number of protons = 3, so number of neutrons = 7 - 3 = 4. 3. A 4. B

Step3: Determine number of electrons

In a neutral atom, the number of electrons is equal to the number of protons. Since both Li - 6 and Li - 7 are neutral, the number of electrons is 3 for both. 5. A 6. A

Step4: Calculate number of nucleons

Nucleons are protons and neutrons. For Li - 6, number of nucleons = 6. For Li - 7, number of nucleons = 7. 7. E 8. E

Step5: Understand chemical - property determinants

Chemical reactions involve outer - most electrons. Isotopes have the same number of electrons and protons, so they have the same chemical properties. Neutrons do not affect chemical reactivity as they are in the nucleus and not involved in chemical reactions. The number of protons determines the number of electrons in a neutral atom. 9. F 10. F 11. I 12. F

Answer:

  1. A. 3
  2. A. 3
  3. A. 3
  4. B. 4
  5. A. 3
  6. A. 3
  7. E. 6
  8. E. 7
  9. F. electrons
  10. F. electrons
  11. I. neutrons
  12. F. electrons