3. write the symbol for each of the following isotopes.\na. hydrogen that has 1 neutron in the nucleus\nb…
3. write the symbol for each of the following isotopes.\na. hydrogen that has 1 neutron in the nucleus\nb. uranium that has a mass number of 235\nc. carbon that has 6 neutrons in the nucleus
Answer
Explanation:
Step1: Recall the isotope symbol formula
The symbol for an isotope is written as (_{Z}^{A}X), where (Z) is the atomic number, (A) is the mass number ((A = Z + N), (N) is the number of neutrons), and (X) is the element symbol.
Step2: Find atomic number for each element
- For hydrogen ((H)): (Z = 1) (from periodic table).
- For uranium ((U)): (Z = 92) (from periodic table).
- For carbon ((C)): (Z = 6) (from periodic table).
Step3: Calculate mass number for each isotope
- a. Hydrogen with 1 neutron: (A=Z + N=1 + 1 = 2). So the symbol is (_{1}^{2}H).
- b. Uranium with mass number 235: (Z = 92), (A = 235). So the symbol is (_{92}^{235}U).
- c. Carbon with 6 neutrons: (A=Z + N=6+6 = 12). So the symbol is (_{6}^{12}C).
Answer:
a. ({1}^{2}H) b. ({92}^{235}U) c. (_{6}^{12}C)