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jok3333 [9.3K]
4 years ago
9

The early universe was composed mainly of which two elements? hydrogen and helium carbon and oxygen hydrogen and oxygen carbon a

nd iron
Chemistry
2 answers:
mrs_skeptik [129]4 years ago
7 0
It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe.

Hope this will help you.
Pepsi [2]4 years ago
3 0

Answer:

c.

Hydrogen and Helium

Explanation:

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ICE Princess25 [194]

C.  

Their radiation facilitates nuclear fusion in young stars.


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3 years ago
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Write the formulas of the compounds formed by NH4+ with the following anions: NO3−, HCO3−, SO32−, PO43−. Use the given order of
tekilochka [14]
NH₄NO₃
NH₄HCO₃
(NH₄)₂SO₃
(NH₄)₃PO₄
5 0
4 years ago
What is the atom of halogen
11111nata11111 [884]

There are 6 Elements in the Halogen section of the Periodic Table.

- Element 7 (Fluorine)

- Element 17 (Chlorine)

- Element 35 (Bromine)

- Element 53 (Iodine)

- Element 85 (Astatine)

- Element 117 (Tennessine)

There is no one "atom" of halogen.

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3 years ago
What are the Sub atomic particles?
rusak2 [61]

A particle which is smaller than an atom in size. Typically, an atom can be broken down into three subatomic particles, namely: protons, electrons, and neutrons.

6 0
3 years ago
HELP ME PLEASE 18 points
Paha777 [63]
Intelligence is the ability to acquire and apply knowledge and skills. Intelligence is acquired by learning things over time, mostly influenced by learning from experience over time.
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