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MATHS TALENT TEST SCORES RELEASED OVERALLS

ALKANES AND ALKENES,ALKYNES

ALKANES:

  • these are also called paraffin.
  • alkanes are saturated hydrocarbons.
  • the formula of alkanes (CnH2n+2).
  • when the H atom is removed from the alkane then it is replaced by the name of alkyl.
  • the formula for alkyl is (Cn H2n+1).
  • the carbon atom in it shows the sp3 hybridization.
  • the bond length is equal to 1.54°A.

ALKENES:

  • these are also called as olefins means form oil products.
  • it possess a double bond between them.
  • the formula is (CnH2n).
  • the carbon atom in it shows the sp2 hybridization.
  • the bond length is equal to 1.34°A.

ALKYNES:

  • these are also called as acetylenes.
  • the formula for this is (Cn H2n-2).
  • the carbon atom in it possesses a triple bond and also shows the linear shape means it is in an sp hybridization.
  • the bond length is equal to 1.20°A.

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THE HYBRIDISATION OF ORBITALS

HYBRIDISATION: it is a phenomenon, mixing up of two or more atomic orbitals of different energies and form an identical hybrid orbital. SP3 HYBRIDISATION: the shape of this molecule is tetrahydral shape. the bond angle is 109.28' this is formed by the combination of one S and 3P orbitals. four SP3 hybrid orbitals are formed. SP2 HYBRIDISATION: the shape of the molecule is planer triangular. the bond angle is 120°. this is formed by the combination of one S and 2P orbitals. three SP2 hybrid orbitals are formed. SP HYBRIDISATION: the shape of the molecule is linear. the bond angle is 180°. this is formed by the combination of S and P orbitals. two SP hybrid orbitals are formed.

NEWTON LAWS

ONE NEWTON = ONE KG METER PER SECOND SQUARE.  NEWTON FIRST LAW : states that inertia of motion. any object can't be move unless there is a force exerts on it. NEWTON SECOND LAW: states that force is equal to the product of mass into acceleration(momentum). NEWTON THIRD LAW: states that when two objects interact together then they apply forces to each other equal size and opposite direction. which means for every action there is an equal and opposite reaction.