碳在哪里,霓虹灯和氮去吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 01 - t01:23:29z //www.hoelymoley.com/feeds/question/14029 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/14029 3 碳在哪里,霓虹灯和氮去吗? 杰克·r·伍兹 //www.hoelymoley.com/users/4600 2018 - 04 - 29 - t17:12:46z 2023 - 05 - 29 - t22:57:42z < p >有趣的是比较估计地球丰度估计银河系丰度。< / p >

Obviously the hydrogen and helium were gaseous and too light for Earth's gravitational field (other than hydrogen in molecules like H2O).

Oxygen is the second most abundant element on Earth. Even though it can exist in the gaseous O2 form, I assume this is because of how it combines with so many heavier elements and is trapped in the ground.

Carbon, neon and nitrogen however have a much lesser abundance in the Earth than cosmic abundances. Can we assume that this is proof that there was a solar event that blew most of the gases away during early planetary formation. (Carbon because of its gaseous form in CO and CO2)?

//www.hoelymoley.com/questions/14029/-/14031 # 14031 3 回答通过userLTK碳在哪里,霓虹灯和氮呢? userLTK //www.hoelymoley.com/users/2717 2018 - 04 - 30 - t11:41:03z 2018 - 04 - 30 - t11:41:03z < p >碳和氮的原因是地球上罕见而丰富的空间,因为含有碳和氮元素不生存在地球距离太阳的热量在< a href = " https://en.wikipedia.org/wiki/Protoplanetary_disk " rel = " nofollow noreferrer " > < / >行星盘阶段。碳可以形成碳酸盐岩,但只有在某些情况下。碳酸盐岩是罕见的在空间和大部分的碳以二氧化碳的形式。< / p >

Oxygen, unlike Carbon or Nitrogen, bonds readily with Silicon, Magnesium, Iron and other heavy elemets, which is why Oxygen is very abundant in rocky planet formation. It's one of the elements abundant in space-dust, unlike CO2, H20, CH4, NH3, which can form, in colder regions, ice or snow like formations as they begin to clump together, but only in cold regions of space.

The sun didn't precisely have an "event", though young stars after formation can be much more violent. The initial heat of formation can be very bright and very hot, and young stars are usually rotating very fast and prone to much bigger solar storms and very large mass ejections. Pretty much all stars go through a violent youth. It's not a unique event to our solar-system.

Common elements in space, such as CO2, H20, CH4 and NH3 are gaseous at Earth's distance from the sun and as a result, are unlikely to stick to anything in the Earth's formation region. This is true for all 4 inner planets and likely all rocky worlds. Rocky planets likely can only form close to their star, just as gas giants, ice giants or other icy abundant bodies like comets and low-density moons, can only form further out.

Gases like the 4 above can begin to be retained around a planet after it reaches a sufficiently large mass with low enough surface temperature to retain those gases by gravity.

The boundaries where CO2, H20, CH4, NH3 and other gases can be found in the protoplanetary disk is called the frost line. Different gases have different frost lines depending on their freezing point.

It's thought that much of Earth's water, CO2, CH4 and NH3 came to the Earth by comet after the planet formed. There's still some uncertainty on the percentages, as some of those elements could have been trapped during formation.

Just to add, hydrogen and helium are obviously abundant, but will only begin to accrue around a planet of a certain mass. In our solar-system, only Jupiter and Saturn are massive enough to accrue hydrogen and helium. That's why Uranus and Neptune are relatively low on hydrogen and helium compared to the universal abundance.

Argon is in Earth's atmosphere because it forms from gradual radioactive decay of Potassium-40. Earth's Helium is also present as a result of radioactive decay.

//www.hoelymoley.com/questions/14029/-/25228 # 25228 0 答案由奥斯卡Lanzi碳在哪里,霓虹灯和氮呢? 奥斯卡Lanzi //www.hoelymoley.com/users/20607 2023 - 05 - 29 - t22:57:42z 2023 - 05 - 29 - t22:57:42z < p >在碳的情况下,大部分的元素可能是陷入地球的核心。碳更溶于铁,特别是液态铁,比其他非金属元素在元素周期表(更有可能形成化合物相反),所以它很可能集中在核心。从[费舍尔et al。< a href = " https://doi.org/10.1073/pnas.1919930117 " rel = " nofollow noreferrer " > < / > 1): < / p > < blockquote > < p >核心形成的基于多级模型,核心可能包含最多0.09(4)到0.20 (10)wt % C,使碳核心的成分和密度的微不足道的因素。然而,这占∼80地球上90%的整体碳库存,总数370 (150)740 (370)ppm。地球上的大部分碳/硫比最好的解释是地球的大部分挥发物从碳质chondrite-like体细胞。< / p > < /引用> < p > <强>引用< /强> < / p > < p >丽贝卡·a·费舍尔,伊丽莎白·科特雷尔,艾里克豪瑞和马里恩勒看(2020)。“地球的碳含量及其core", < em > PNAS < / em > <强> 117 < /强> (16)8743 - 8749。编辑大卫·沃克,哥伦比亚大学。< a href = " https://doi.org/10.1073/pnas.1919930117 " rel = " nofollow noreferrer " > https://doi.org/10.1073/pnas.1919930117 < / >。< / p >
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