<span>significant figures: 7, decimals: 3</span>
Long year ago In space, gravity attracts dust and gas together which created the young solar system. It pulled low-density cloud together to produce initially the solar nebula. These clouds are made of interstellar gas and dust.
The sun formed first from these nebula and dust.
Planetesimals is just a process indicates the formation of Earth and the other planets from concentrations of dust and diffused matter in the solar system.
Inner planets are the planets located closure to the sun in comparison to outer planets. These inner planets are mercury, venus, earth and mars. Thus, 4.5 billion year ago Inner planets formed at last.
Answer:
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Explanation:
The electron configuration of Br- is [Ar] 3d10 4s2 4p6
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In a chemical equation coefficients indicate the number of molecules/atoms involved in the reaction.
