This is a Physical change. No chemistry involved.
Answer:
D by counting the number of times the carbon symbol appears or balls that are colour- coded
Answer:
C: Good conductors of electricity
Explanation:
By definition, Metals have metallic bonds and thus they are good conductors of electricity due to the fact that their electrons in the electron sea are usually free to flow and carry electric current. Thus, the correct answer is option C.
1. Evaporation, 2. Reactants, 3. Gamma rays, 4. Rusting, 5. 0 degrees c, 6. Oxidation, 7. Nuclear, 8. Fusion, 9. Burning, 10. Thermo.
Answer:
Iodine has the greatest average number of neutrons.
Step-by-step explanation:
<em>Tin
</em>
Tin has 41 isotopes with every mass number from 99 to 139. Thus, the average mass number is 119.
Tin has atomic number 50, so the average number of neutrons
is 119 – 50 = 69.
<em>Antimony
</em>
Antimony has 37 isotopes with every mass number from 103 to 139. Thus, the average mass number is 121.
Antimony has atomic number 51, so the average number of neutrons
is 121 – 51 = 70.
<em>Tellurium
</em>
Tellurium has 39 isotopes with every mass number from 104 to 142. Thus, the average mass number is 123.
Tellurium has atomic number 52, so the average number of neutrons
is 123 – 52 = 71.
<em>Iodine
</em>
Iodine has 37 isotopes with every mass number from 108 to 144. Thus, the average mass number is 126.
Iodine has atomic number 53, so the average number of neutrons
is 126 – 53 = 73.
Iodine has the greatest average number of neutrons.
