Why is the hydride ion larger?

when one electron is added to hydrogen, the no of electrons becomes double the no. of protons. this results in a very large expansion of 1s subshell of Hydride ion.

What is the size of hydride ion?

the ionic radius of an H− ion is 134±2 pm, which is slightly larger than the radius of F−(II) (128.5 pm) and almost the same as the radius of O2−(II) (135 pm).

What is the radius of H+?

Hydrogen, H The atomic configuration of the atom is (1s)1, and it has an ionic radius of 0.208 nm.

Which of the following ion is or are bigger than hydride ion?

2 Answers. H- is larger than Br- , bcz in case of H- no. of electron=2, while no. Of proton =1 ;so the ratio become 2.

Why does the He atom have a smaller radius than the H atom?

Helium belongs to the right in the periodic table and as we move from hydrogen to helium number of inner shell electrons increases and effective nuclear charge increases and thus its size is smaller than the hydrogen atom.

Which has the largest atomic size H f/o h+?

Answer. Explanation: out of hydrogen and fluorine fluorine have large atomic size because atomic size depends on atomic radius of element . Hydrogen belongs to group 1 and period 1 having only one cell (k cell ) while fluorine belongs to group 17 and period 2 .

Which has largest atomic size H (-) F (-) O (-) H (+)?

“F” element has the largest size among H, C and F. Down the group atomic size increases since the number of shells increases.

  • Define atomic size.
  • Which is greater in size , an atom or an anion?
  • The radius of the atom is of the order of :
  • Consider the isoelectronic species, Na+, Mg2+, F− and O2−.

Which has largest atomic size H of H+?

Is H bigger than H+?

Why the ionic size of H+ is greater than H I.e H+> H.

Which is bigger Mg2+ or Na+?

(i) The sodium ion (Na+) is larger than the magnesium ion (Mg2+) due to two effects.

Which is bigger He+ or H?

Helium has smaller radius than hydrogen because in helium the electrons are attracted by a larger nuclear charge that is not fully “screened” by the electron-electron interaction.

Why size of He+ is smaller than H?