Hydrogen resembles alkali metals because:

hydrogen has the same mass as alkali metals

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hydrogen has the same size as that of alkali metals

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hydrogen has only one electron in its outermost shell

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none of the above

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Solution

The correct option is C hydrogen has only one electron in its outermost shell
Hydrogen resembles alkali metals because it has only one electron in the outermost shell same as alkali metals. It can donate one electron and become $H^{+}$ .

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Similar questions

Q. Hydrogen has high ionization energy than alkali metals because it has:

Q. Hydrogen is similar to alkali metals in that it has a ionisation enthalpy.

Q. Assertion (A): Hydrogen shows resemblance with alkali metals as well as halogens.
Reason (R): Hydrogen exists in atomic form only at high temperature.

Question 2

Why does $H^{+}$ ion always get associated with other atom or molecules?

(a) Ionisation enthalpy of hydrogen resembles that of alkali metals.

(b) Its reactivity is similar to halogens

(d) Loss of an electron from hydrogen atom results in a nucleus of very small size as compare to other or ions. Due to small size it cannot exist free.

Q. The position of hydrogen is not fixed in the periodic table, sometimes it is placed with alkali metals in 1st group and sometimes with halogens in the

17^{t h}

group as it resembles with alkali metal metals as well as with halogens.

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Hydrogen resembles alkali metals because:

The correct option is C hydrogen has only one electron in its outermost shellHydrogen resembles alkali metals because it has only one electron in the outermost shell same as alkali metals. It can donate one electron and become H+.

The correct option is C hydrogen has only one electron in its outermost shell
Hydrogen resembles alkali metals because it has only one electron in the outermost shell same as alkali metals. It can donate one electron and become $H^{+}$ .