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helium is the most reactive, you can tell this by the amount of protrons and neutrons in it as the reactions need these to take place and the more there are the more likely it is to react like with the alkali metals the most reactice has the most protrons and neutrons
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Which of the following elements is the most chemically reactive helium hydrogen argon or neon?
Helium, argon, and neon are noble gases, so the only "reactive" element of the four is hydrogen.
What is the most chemically reactive ion?
The most chemically reactive ion is the hydrogen ion.
What makes up two sun?
Hydrogen is the most common element in the universe as a whole; about 75% of the universe by mass is hydrogen (since hydrogen is also the lightest element, that means that the percentage by number of atoms is even higher) . Helium is second; oxygen is a fairly distant third.
What is the most common element found in star?
Stars contain hydrogen, helium and a little iron.
How to Use valence electron configuration to explain why helium is safer than hydrogen for use in airships?
Helium had valence electron of 2 and filled the most inner ring so it is chemically robust and inert. Outer valence electron ring contain 8 electrons so for Neon is robust as it had 2,8 electrons and Argon had 2,8,8 electrons and fill the outer ring.
Which of the following elements is the most chemically reactive helium hydrogen argon or neon?
Helium, argon, and neon are noble gases, so the only "reactive" element of the four is hydrogen.
Which is the most common element between hydrogen and helium?
Hydrogen is the most abundant element in the universe by a wide margin.
The two elements most abundant in the universe are?
Hydrogen and helium are the two most abundant elements in the universe.
Which element is most reactive lithium carbon fluorine or helium?
The most reactive is fluorine.
What is the most chemically reactive ion?
The most chemically reactive ion is the hydrogen ion.
Gas giants have atmospheres composed primarily of helium and what?
Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.
Why do all stars have hydrogen and helium?
Hydrogen and helium are, by far, the most abundant substances in the universe.
What makes up two sun?
Hydrogen is the most common element in the universe as a whole; about 75% of the universe by mass is hydrogen (since hydrogen is also the lightest element, that means that the percentage by number of atoms is even higher) . Helium is second; oxygen is a fairly distant third.
What is the most common element found in star?
Stars contain hydrogen, helium and a little iron.
What elements makes up most of the suns mass?
The main two are hydrogen and helium.
What element is the sun mostly made of?
well the sun gets its name by just spiningb a star so its a star . comment please
What is element is the most chemically reactive?
Hydrogen
