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Why is lithium harder than potassium in structure and bonding?
barka idris
It is because Lithium has the smallest atomic radius of them all, because it has only two shells of electrons.So the small lithium nuclei, with their one positive charge each are more easily held together by the delocalised elextron cloud than the much larger sodium or potassium ions that still only have one positive charge each.potassium is more reactive owing to the loosely bound valence electron owing to a relatively more "electron shielding" effect.The valence electron is partially shielded from the attractive force of the nucleus by the inner electrons.Although lithium and potassium have one valence electron.The difference in hardness between lithium and potassium is primarily due to their atomic structures and bonding. Lithium has a smaller atomic radius and stronger metallic bonding compared to potassium. This makes lithium atoms more tightly packed and bonded, resulting in a harder substance compared to potassium.
Chibundu Esther
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Why lithium is harder than sodium and potassium?
because of its smaller size and high charge density.....
Which has high ionisation energy lithium or lithium plus?
lithium plus. removing electron from something that is positive is much harder.
Is rubidium harder or softer than potassium why?
it is softer
Why lithium hydride is more stable than other alkali hydrides?
Lithium hydride is more stable than other alkali hydrides because lithium is both lighter and harder than other alkali hydrides.
Which is harder gabbro or limestone?
Gabbro, with its interlocking crystalline structure.
Is igneous harder than sedimentary rocks?
They are generally harder because of their interlocking crystalline structure and mineral composition.
Why does bread harden when stale?
because it's structure gets harder and harder as the molecules inside of it start to harden or adapt to its environment
Why two atoms chemically join harder to separate that two atoms mixed together?
A mixture doesn't involve a chemical bonding.
What has a second ionization energy level of 1577?
The element that has the highest second ionization energy is Li. When you remove the first electron from Li you are down to the 1s orbital. They are harder to remove because they are closest to the nucleus.
Is potassium softer than sodium?
Chemical formula of potassium bromide is KBr. Potassium and bromide ions make a giant lattice. It is very hard.
Which two metals explode in water?
Group 2 metals (alkaline earth metals), calcium and barium would be examples
Why is diamond harder than quartz?
Diamond has stronger bonding because of the fact that it has 2p valence orbit whereas Silicon has 3p valence orbit. Moreover we know that as we go farther away from Nucleus the shielding of electrons takes place.Due to this shielding, the bonding becomes weaker. In case of Silicon carbide and Silicon dioxide 3p orbits are participating in bonding. Hence the shielding leads to weakening of bond.Shielding is not there in case of Diamond as mentioned. Hence this is the reason why Diamond is harder.
