Answer:
It is Qatar
Explanation:
Bahrain is an oil dry country
b) false
After two half-lives, there is no longer any of the original radioactive material remaining. Thus, the given statement is true.
A radioactive isotope's half-life is the amount of time it takes for the number of nuclei in a sample to decrease by half. The Phanerozoic eon refers to the whole period of geologic time that preceded the start of the Paleozoic era. The isotope's mass number is unaffected by the emission of a beta particle. There is no longer any of the original radioactive material after two half-lives.
A half-life, or the amount of time it takes for half of a substance to decay radioactively, is what distinguishes natural radioactive processes. It is simple to determine how much material remains after a specific number of half-lives. For instance, the six-hour half-life of the aforementioned technetium-99m indicates that starting at 100 percent, after six hours, we can no longer detect it.
Learn more about radioactive isotopes, here:
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Answer:
true
After two half-lives, there is no longer any of the original radioactive material remaining.
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A) hybridization
B) natural selection
C) polynuclueization
D) chemical selection
Answer:
B:Natural Selection
Explanation:
erosion and land water cause the ground to do either two things.
erosion causes the soil on top to be picked up by moving water or pounding and splashing water from the rain. this soil is usually moved to the bottom or to the lowest level around it.
land water, which causes the soil under to become softer and is able to become more and more compact and able to turn to petrified soil or even rock.
The label denoting an orbital's type and orientation is represented by the principal quantum number, the angular momentum quantum number (s, p, d, f), and the magnetic quantum number. This representation encapsulates electronic energy value, orbital shape, and orientation respectively.
The label for the orbital mentioned indicates its type and orientation in space. This label is determined by the principal quantum number, the angular momentum quantum number, and the magnetic quantum number. The first number signifies the general value of the electronic energy, while the second term (represented by the designations s, p, d, f, and beyond) argues for the shape of the orbital. The final label, the magnetic quantum number, signifies the orientation of an atomic orbital around the nucleus. For example, you would find that there are five d-orbitals in a d subshell (l = 2), indicating different orientations in space.
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B. fossil
C. event
D. stratum