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A stable atom of hydrogen (H)
The test you need to run is whether hydrogen ions (H+, nominally available in aqueous electrolytic solutions) can take an electron from each one of the metal atoms you listed, yielding elemental (neutral) hydrogen (gas) as a stable product along with the ionized form of the metal
Individual hydrogen atoms are stable in so far as they do not decay, they are however very reactive chemically and they can easily become stabilized by bonding two hydrogen atoms each other to form a hydrogen molecule. Meanwhile, hydrogen reacts with many other elements including metals, metalloids and non metals.
An atom of an element for example Neon (Ne) is neutral (no positive or negative charge as it has 8 electrons in the outer shell) and is very stable. It is a noble gas because the outer electron shell is filled which makes it largely chemically inert, and it is stable because it's usual isotope does not undergo nuclear decay. Most of the 92 naturally occurring elements, in their most abundant isotope, are stable.
Hydrogen is a diatomic element needing another one of its kind to be stable so another hydrogen atom would bond with it making H2, but there could be other elements that need just one electron to be happy can also bond with Hydrogen (like Fluorine, which makes Hydofluoric Acid).
Hydrogen with its electron missing is a positive ion and like all ions is very chemically active, trying to become uncharged again.
Hydrogen and nitrogen are not composed of elements; they are elements. Neutral hydrogen is composed of one electron and one proton.Nitrogen in its neutral, stable state has 7 protons, 7 neutrons, and 7 electrons.
A neutral (uncharged) atom has the same number of protons and electrons. Isotopes of an element may have several stable isotopes with various numbers of neutrons.
Hydrogen-1 and hydrogen-2 isotopes are radioactively stable.
Hydrogen-1 and hydrogen-2 isotopes are radioactively stable.
To form a stable bond, hydrogen will have to bond with three nitrogen molecules. This will create NH3 to form an uncharged molecule, ammonia.NH4 +, ammonium is a charged polyatomic ion.
Carbon has 6 protons, 6 electrons, and usually 6 neutrons (if it's carbon-12)Hydrogen has 1 proton and 1 electron, and usually no neutrons.Carbon requires 4 bonds to be stable/neutral, and Hydrogen requires 1.
Helium is already stable. Hydrogen should gain or lose one electron to be stable.
Hydrogen has three isotopes
yes
To become more stable: positive+negative=neutral. Neutral is more stable than positive and/or negative.
hydrogen