To help them discover new constructive forces on earth
Answer:
It is a model of the atom that has electrons surrounding the nucleus
Step by step explanation:
The first one is right and so is eight you have to add them together to see if they go together if they dont add what is missing
Bonds between atoms break and new ones form and energy is either given out or taken in
Answer:
Explanation:
There are some radioactive nuclides can be used to measure time on an archeological scale. One is the best example of this is radiocarbon dating. This process is based on the ratio of caebon-14 to carbon-12 in the atmosphere which is relatively constant.
The half time of C-14 5730 years
Carbon-14 is a radioactive nucleus. It has a half-life of 5730 years.
All living tissues like plants and animal absorbed carbon-12 along with carbon-14 with same ratio of caebon-14 to carbon-12 in the atmosphere.
Carbon-14 dating is based on the ratio of carbon-14 to carbon-12 in the atmosphere which is relatively constant
