Explanation:
Tc - 99 is technetium 99.
It is a radioactive element that decays spontaneously. It has a half-life of 211,000 years and decays to stable ruthenium.
- On the periodic table, it has an atomic number of 43;
Mass number = 99
Atomic number = number of protons = number of electrons in atom
Number of protons in Tc is 43
electron is 43
Mass number = number of protons + number of neutrons
Number of neutrons = mass number - number of protons = 99-43 = 56
learn more:
Atomic number brainly.com/question/2057656
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Answer:
Chicken Noodle Soup
Explanation:
The rest do have other things in them but are dissolved unlike the chicken noodle soup.
Hope this Helps!!
:D
The Giant-Impact theory. People basically believed that the moon was created from the collision between earth and another small planet:)
Testable, that is always required for a hypothesis. Otherwise, how can you prove it?
