Why are the metals gold and silver found as elements in nature, whereas the metals sodium and magnesium are found in nature only in compounds? Why do lithium, sodium, and potassium exhibit similar chemical properties? Why is lead used as one of the metals in a therm...
How many shells are represented in the presently known periodic table? How do two different isotopes of carbon differ from each other? Why do lithium, sodium, and potassium exhibit similar chemical properties? What is the name of the Li element?
Most of the alkali metals, such as lithium, sodium, and potassium, are very similar. They are soft, reactive, silvery solids. They have one outer electron and conduct electricity. They are easily cut with a knife. But, there is an exception – an anomaly. Right at the very top of thes...
Formulated as [Li4Na4(ButO)4{PhN(H)}4(NaOH)(4-Me-py)4], this tetralithium pentasodium mixed alkoxide–amide can be synthesized either by reaction of lithium anilide with sodium t-butoxide or of sodium anilide with lithium t-butoxide, in the presence of the co-...
VGS PUBLICATION-BRILLIANT-METALS AND NON-METALS-EXERCISE Give reasons for the following : Immersion rods for heating liquids ar... 01:13 Copper cannot displace zinc from its salt solution. Give reason. 02:52 Sodium and potassium are stored in kerosene. Why? 01:45 Give reasons for the followi...
3. Size and Ionization Potential: - Smaller Atomic Size: The first element in a group has a smaller atomic radius compared to the other elements in the group. For example, lithium is smaller than sodium or potassium. - Higher Ionization Energy: The first element generally has a higher ioniza...
Materials in lithium ion battery electrodes expand and contract during charge and discharge. These volume changes drive particle fracture, which shortens battery lifetime. A group of ETH and PSI s ...
Why are titanium and gallium not very similar while lithium and sodium would be most similar? Why are no two emission spectra for different elements ever the same? Dalton assumed that all atoms of the same element are identical in all their properties. Explain why this...
What do lithium, sodium and potassium have in common? On the basis of electronic structures, explain why most metal halides are ionic. Explain why CaCl_2 is likely to have properties similar to those of CaBr_2. Why is electrothermal ionization more sensitive than flame ionization? Why is usin...
According to Fazan's rule, Li^(+) ion can polarise I^(-) ion more than the F^(-) ion because of the bigger size of the anion. Therefore, lithium iodide (LiI) has more covalent character than lithium fluoride (LiF).