Answer:The approximate atomic mass of lead is 207.24 amu.
Explanation:
Abundance of isotope (I) = 1.4% = 0.014
Atomic mass of the Isotope (I) = number protons + number of neutrons = 82 + 122 = 204 amu
Abundance of isotope (II) = 22.1 % = 0.221
Atomic mass of the Isotope (II) = number protons + number of neutrons = 82 + 125 = 207 amu
Abundance of isotope (III) = 24.1% = 0.241
Atomic mass of the Isotope (III) = number protons + number of neutrons = 82 + 124 = 206 amu
Abundance of isotope (IV) = 52.4% = 0.524
Atomic mass of the Isotope (IV) = number protons + number of neutrons = 82 + 126 = 208 amu
Average atomic mass of an element =
![\sum(\text{atomic mass of an isotopes}\times (\text{fractional abundance)})](https://tex.z-dn.net/?f=%5Csum%28%5Ctext%7Batomic%20mass%20of%20an%20isotopes%7D%5Ctimes%20%28%5Ctext%7Bfractional%20abundance%29%7D%29)
Average atomic mass of lead =
![(204 amu\times 0.014+207 amu\times 0.221 amu+206\times 0.241+208 amu\times 0.524)=207.24 amu](https://tex.z-dn.net/?f=%28204%20amu%5Ctimes%200.014%2B207%20amu%5Ctimes%200.221%20amu%2B206%5Ctimes%200.241%2B208%20amu%5Ctimes%200.524%29%3D207.24%20amu)
The approximate atomic mass of lead is 207.24 amu.
Ans: A. Triple covalent bond.
Hope this helps!
Answer:
.574
Explanation:
smallest number of digits in the expression was 3, so the final answer should have 3 sig figs
Answer:
2NaBr + Ca(OH)2 ––> CaBr2 + 2NaOH
Answer: The force which exists between particle of same kind of substance called cohesion force. A . B . The force of cohesion is defined as the force of attraction between molecules of the same substance.
Explanation: