Why is hydrogen less reactive than halogens?

Halogens are more reactive than hydrogen because, in case of halogens they have 7 valence electrons in their valence shell so they acquire 1 more electron to complete their octet attaining noble / inert gas configuration. So, halogens are more reactive.

How is hydrogen different from halogen?

Hydrogen has one electron in its electron shell, needing one additional electron to fill that shell. The halogens all have seven electrons in their outer electron shells. Hydrogen, however, also forms a positive ion by losing its one electron; no halogen does this.

Why is hydrogen very reactive?

Atomic hydrogen (H) has a single valence electron (electron in the last shell) just like the alkalis have (sodium, potassium etc.) Hence hydrogen (and alkalis) READILY lose electrons to form compounds. This makes hydrogen (and alkalis) highly reactive.

Is hydrogen more or less reactive?

Atomic hydrogen is very reactive. It combines with most elements to form hydrides (e.g., sodium hydride, NaH), and it reduces metallic oxides, a reaction that produces the metal in its elemental state.

Why is hydrogen not placed in any group?

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

Which halogen is more reactive towards hydrogen?

fluorine
Therefore, fluorine is the most reactive and iodine is the least.

Which one is the similarity between hydrogen and halogen?

1) Both hydrogen and halogens require one electron to complete their valence shell. 2) Both hydrogen and halogens are non-metals (Except iodine which has partial metallic character). 3) Both hydrogen and Halogens acts as negative ions when combined with metals. 4) Their molecules are diatomic.

Why is hydrogen a halogen?

Hydrogen as a halogen? Hydrogen, like the halogens, has one electron short of a complete outer shell and can form H- ions like Cl- and therefore forms ionic compounds with reactive metals – NaH similar in structure to NaCl. Hydrogen also exists as a diatomic gas like fluorine and chlorine.

WHY BE does not react with hydrogen?

Beryllium doesnot react directly with hydrogen unlike other alkaline earth metals to form ionic hydride. This is because the oxidation potential of Beryllium is very low and thus it doesnot donate its electrons easily to hydrogen.

Which is the most reactive towards hydrogen?

Atomic hydrogen.

Atomic hydrogen is extremely reactive, being more reactive than ordinary, nascent, or adsorbed oxygen.

When it is passed over metals or non-metals, it forms hydrides at normal temperatures, excepting for nitrogen, to which it does not react.

Why are alkali metals more reactive than halogens?

Alkali metals >Halogen >Hydrogen (reactivity order ) Because alkali metals have ever low bond strength while halogen occurs as diatomic molecules more bond enthalpy as compare to alkali metals.

Why is the reactivity of halogens greater than that of H2?

If we consider addition to olefins, H2 needs a catalyst, while the halogens add very fast. The bond dissociation energy of H2 is 432 kJ/mol, that of Cl-Cl is 239 kJ/mol, Br-Br 193 kJ/mol,. F-F 154kJ/mol, I-I 149. Hence, the reactivity of halogens is much greater than that of H2.

Are interhalogen compounds more reactive than halogen compounds?

Verified by Toppr (i) Interhalogen compounds are more reactive than all halogens except F. The interhalogen bonds (A-X) are weaker than the bonds between halogen atoms (X-X) in dihalogen compounds.

Why are halogens in Group 7 less reactive?

When an element in group 7 takes part in a reaction, its atom’s outer shells gain an electron and form negatively charged ions, called anions. The less easily these anions form, the less reactive the halogen.