1 15 Flashcards
How many ways we can calculate hybridization
2
By absolute method
By steric method
Give the formula of steric method
1/2 [valence electron of atom -how many no. Of monovalent species -cationic+anionic charge ]
Odd electron species koine si hoti hai
Jiska hybridization faction me aaye
Aise koine koine se molecule hai jinka hybridization hum steric no. Se nhi Tikal site
Dragos molecule
Having more than one centre
Molecule having transition metal s centre
When molecule in solid state
Steric no.more than or equal to 7
Effect of VSEPR OR NBEPR on bond angle
VSPER =BOND ANGLE DECREASES
NBEPR= BOND ANGLE INCREASES
Explain VSEPR
The shape of molecule is determine by repulsion between all of the electron pairs present in the valence shell
Give bond angles
Linear ,trigonal planer ,tetrahedral,tbp,oh
180,120,109.28,120 and 90,90
Why lp repulsion decrease bond angle
Lplp> lp bp > bp bp
Jo electrons bond pairs ke hote hai na unmet repulsion kiss cheers pr depend karta hai
Electronegativity of central atom and other atom
Give the order of repulsion b/t triple double or single bond
More repulsion occur in triple bond then double then single
Bond angle order
Ch4,nh3,h2o
A/c to vsepr
Ch4>nh3>h20
Bond angle order SF6,BrF5,XeF4
A. Has octahedral 90
B. 1lp 84
C. 2lp are Trans to each other so there will no repulsion bond angle 90
In I 3- how many lp present and where they are present
3lp at equatorial position in tbp
Why NF3 HAS BOND ANGLE 102 WHILE NH3 HAS 107
Because of more electronegativity difference between N and F their bonding electrons Pais more taken by fluorine so here will be no bp bp repulsion and lp repulsion cause largely decreases in bond angle
In OF2 ,OH2 WHICHHAVE LESS BOND ANGLE
Of2
