Hello Student,

From Water H2 preparation can mainly be done in two ways , which are as follows :-

By Action of Metals, Na, K , Mg , Zn ,Fe etc .

1. 2Na + 2H2O = 2NaOH + H2
2. Mg + H2O(Boiling Water) = MgO + H2

By Action of

• Cengage inorganic chemistry.
  
• Concise inorganic

Hii

The formula for manganese is Mn. It has wide range of oxidation number. Oxidation number of -3 to +7 has been observed for Mn. But the common one are- +2, +3,+4,+6,+7

Hope it helps

Hello Student,

The transition elements in ground state or stable oxidation state have (n-1)d^1-9 ns^1-2 electronic configuration.

Note Zn, Cd, Hg and Cn are not considered transition elements because in their ground state and stable oxidation state they do not have (n-1)d^1-9 configuration rather they have (n-1)d^10 configuration.

• Equilibrium

• Chemical Bonding and Molecular structure

• Electrochemistry

• Chemical Kinetics

• Coordination Compounds

• S, P, D and F Block Elements

• Atomic structure

• NCERT:(You have to start from here and should respect this book)
• M.S. Chauhan-There are two editions one jee and other neet, both are perfect in their class.
• Peter Sykes-good conceptual knowledge and Indian edition has some of the best practices for 12th

• Concise Inorganic Chemistry by J D Lee
• O P Tandon Inorganic Chemistry

Hi,

As 15 days is a very short time to prepare you should focus on the important topics. You should study those questions and topics which are most frequently asked by the examiner of your board. There are some units which have more wieghtage in terms of marks identify those

• Use NCERT and Solomon and Fryhle for theory and understanding the mechanisms.
• Use your coaching material and previous years questions for practise.

• Use NCERT Aand P.Bahadur for practise as well as theory.

• Use you coaching material and OP Tandon