A.the bottom layers are compressed into ice
<h3>
Answer:</h3>
s-sub-level and p-sub-level
<h3>
Explanation:</h3>
- Group 18 elements in the periodic table are known as noble gases.
- They have an octet configuration with their outermost s and p-sub-levels full, which makes them inert or nonreactive.
- The s-sub-level takes up a maximum of 2 electrons while the p-sub-level holds a maximum of 6 electrons.
- They include, argon, neon, xenon, krypton, etc.
- Their electron configuration shows full outermost s and p-sub-levels.
- For example; the electron configuration of Ne is 1s²2s²2p⁶, with full s and p sub-levels.
5. Prolactin
4. DHEA
3. Thyroid
2. Estrogen
1. Testosterone
0.25 g of U-235 isotope will be left.
<h3><u>
Formula used :</u></h3>
N = N₀/2
where,
N = amount of U-235 left after n-half lives = ?
N₀ = Initial amount of the U-235 = 1.00 g
n = number of half lives passed = 2ⁿ
Using the formula, we can conclude:
N = 1/2² = 0.25
Thus, 0.25 g of U-235 isotope will left .
<h3><u>The concept of half lives</u></h3>
A half-life is the amount of time it takes for something to go from 100% to 50%. The phrase is most frequently used in reference to radioactive decay, which happens when energetic atomic particles that are unstable lose momentum. There are 29 elements that have been shown to be capable of going through this process.
Like pharmaceuticals, advertising campaigns, and a variety of other things, information likewise has a half-life.
To view more questions based on half lives, refer to:
brainly.com/question/27144626
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Changing the volume increases the area that the molecules collide with so the force is spread over a larger area.