Similarities between Lithium and Magnesium || Points of Similarities between Lithium and Magnesium ||

-

The similarity between lithium and magnesium is particularly striking and arises because of their similar size: atomic radii, L i = 152 pm, Mg = 160 pm; ionic radii : L i+ = 76 pm, Mg 2+ = 72 pm. 

The main points of similarity are : 

» Both lithium and magnesium are harder and lighter than other elements in the respective groups.

» Lithium and magnesium react slowly with water. Their oxides and hydroxides are much lesser soluble and their hydroxides decomposes on heating. Both forms a nitride, Li3 N and Mg3 N2, by direct combination with nitrogen(N2) . 

» The oxides, Li2 O and Mg O do not combine with excess oxygen to give any superoxide.

» The carbonates of lithium and magnesium decompose easily on heating to form the oxides and C O2 . Solid hydrogen carbonates are not formed from lithium and magnesium.  

»Both L i Cl and Mg Cl2 are soluble in ethanol. 

» Both L i Cl and Mg Cl2  are deliquescent and crystallise from aqueous solution as hydrates, L i Cl.2H2O and Mg Cl2 . 6H2O.

Comments

Post a Comment

Popular posts from this blog

Diagonal Relationship between Beryllium and Aluminium || Relation between Beryllium and Aluminium

-
  Diagonal Relationship between Beryllium and Aluminium The ionic radius of Beryllium (Be 2+) is estimated to be nearly 31 pm; the charge/radius ratio Or e/m ratio is nearly the same as that of the Al 3+ ion. Hence beryllium resembles aluminium in these ways. Some of the similarities are given below: » Like Aluminium, Beryllium(be) is not readily attacked by acids H+ donor because of the formation of an oxide film on the surface of the metal by reacting with oxygen, i.e. they are rendered passive by nitric acid. » Beryllium hydroxide[[Be(OH)4]2] dissolves in excess of alkali to give a beryllate ion, [ Be(OH)4]2– just as aluminium hydroxide[Al(OH)3] gives aluminate ion, [Al(OH)4] » The chlorides of metals beryllium and aluminium have Cl– bridged chloride structure in vapour phase. Both the chlorides are soluble in organic solvents and are strong as Lewis acids They are used as Friedel Craft catalysts. » Beryllium(Be) and aluminium(Al) ions have strong tendency to form complexes, (BeF4)2
Read more

QUANTUM NUMBERS (Principal, Azimuthal, Magnetic and Spin)

-
Image
                  QUANTUM NUMBERS  Orbitals represent regions in the space around the nucleus where the probability of finding the electron is maximum. A large number of electron orbitals are possible in atom. These can be distinguished by their size, shape and orientation of the orbitals. To describe each electron in an atom in different orbitals, we need a set of three numbers known as quantum numbers. These are designated as n, l and m. In addition to these three numbers another quantum number is also needed which specifies the spin of the electron. These four numbers are called quantum numbers. These are discussed below: 1. Principal quantum number (n) :  This quantum number determines the main energy shell or level in which the electron is present. It is denoted by n. It can have whole number values starting from 1 such as n = 1, 2, 3, 4 ... This quantum number also identifies as shell. The shell with n 1 is called the first shell. The shell with n 2 is called the second shell and
Read more

S-Block Elements || S-block element class 11 chapter 8 || Group 1A, 2A elements || S block elements chapter 8 notes class 11 || Chemistry ||

-
Image
                    INTRODUCTION : The s- block elements of the periodic table are those in which the last electron enters  into the outermost s-orbital. As the s-orbital can accommodate only two electrons, in two group (1 & 2) belong to the s-block of the periodic table. Group 1 of the periodic table consists of the elements : lithium (L i), sodium (Na), potassium (K), rubidium (R b), caesium (C s) and francium (F r). They are collectively known as alkali metals. These are called because they forms hydroxides on reaction with water which are strongly alkaline in nature. The elements of Group 2nd include beryllium (Be), magnesium (Mg), calcium (C a), strontium (S r), barium (B a) and radium (Ra). These elements with the exception of Beryllium are commonly known as the alkaline earth metals. These are so called because their oxide and hydroxide are alkaline in nature and these metal oxides are found in the earth’s crust . The general electronic configuration of s- block element is
Read more

Upstox referral link

-
 *Looking for one app to research, analyse, invest? Join Upstox!*      Opening an Upstox account is easy-peasy. All you need is your PAN + Aadhaar. You can sign-up online using my link within the next 7 days: https://link.upstox.com/MHbF    🛒 Upstox makes investing fun and it feels just like online shopping!      💸 With special filters + smartlists they make the search for the right investment simple   💰 They’ve got SIP modes for both Mutual Funds & Stocks    📰 They’re easy to understand with news, research & insights on all investments   📈 And have a separate app for traders with TradingView, GTT orders, Option Chain       *P.S. Sign up with a number not registered with Upstox before. Can’t wait to welcome you to the Upstox fam👋!*
Read more