Committed for
TORA NARAYAN
9911274975
Excellence in Education
STRUCTURE UNIT
OF
- 2
A ToM
Isotopes
Atoms Lsotope datined
of the as atomic
DUmber but sae eleent sgme
.
shich lqu the
Exonmple dflerewt mass nymbeys"
Protium (fgdegen
( H) eutenum(
hastre, lsotop
)ermd so: es
TotiomH jT)
99q8S ,D
jDor
Similorly DoS.
ehlor
35 Uraniym
37
23 C2 = 92)
A = 23ST)
)
238u (2 =92) 4-238
239U (2-92> A:239
)
J&obar
fom of diflerent elemeds
HAtom
aoing eBme
s mymbe but deretatomic nUmbeys Qe Calleel
Lsobes
2xgmple
,Ar C18 profens, 22 netrmy)
19 2ofons, 21 neutoons
)cmel
19
20ofens, 20 heutrny
)
lsotones!'
toms awing seme number of heutrons but lfret
Mass n umber ae callecl sotoes
Exqmple 3D
(14 potones , l4 nutrens ),
( pr0fons, 16 heetrons) 4
32
l6
, Coneept ofatomic number, Mas number
he mumbe of unt posit chargss (aried
e nucleus of an tomm is deymeel as Hu atomic by
number
Atomic number (z) = NuclegY charge or of proten
No of electrm
IMas nymber = No of protem + n0 of neutren
model o atom
Ruther forads nucleus
n The Yeatues of tus modl
main
an atom,the enHe Mass ond
in a
Amall segion
pO8)Ha chorae h
at tentni
ace
e
Concer trcteel
knoun as mucleus.
Ha pOsiHu chae of the nucleus 15 det to protohk
2) ls dfoyeut
magnituce of tte posi Hu Charge on He nuc leus
atom
l4)
fr differerd
e Mas of the nuclews i8 de to rotns cmol soms oH
each kqulng mao necely eguel to Hes
neutrl partteles
of to profen
Mass
He nucleus s Surreumded by negatively chargeel electet
Tus
wlith bal ance the Poe charg on
nectral
e nuleus
electically
e aom is
ae
nbt 8tatonasy but ae evoluing
s) he electrens
aHound
iLevoduing
e
nucleus at veny high spelels
ceound the sun
ike plants
(e) Thee electms ond the nucles a9e teld togete by
orces of cttrachon
electrosfat'c Hle nucleus
(7 Mosf of te space ii an cdom bl
omd tl ouvodoing electrony is embty:
dimitatien of Rutherfrds model
(0 Ruthortord model Gannot explain he Habil
9n aton
2) Ruthferd model also feilesl to erplatn He
, DRIAL CHENINIRYBY
NARAYAN UEADHEYAV
91137474
Cammitted for Exeellence inEducation
eiaternce of terfain olefnie
(8) rsmoda do4s not cxbladn
ina
te
Aa
trucre
Ayohogen
of tor
spechm
e
The olo n buen of electvon areund ha nucleus drd hat
ehegia
Developet teadiny to he boir odelelaten
Owing
he peiock of olevelopmut of reo piodels
to pro utherfrd mnola L of an atom te&
Corieepts playcol a a fey vole
Dual beaviour of he electo magreic ral ation
(2 Homit spectra
4lectromagnie Nacdiations
tleckvomag nehe adeotons i8 aerm of enargy olith
both- grn electic Comboneut cmd a magnete lompongt
has
chayacteribtics of electromagnctic oaekahons
() these (orsiat of electicAornd magnche
ield that oscilati
in the diyec hers perpendiculay to each othY both omd
perpanclicular to thelirecHon in ich tle loqw s
trave lling as shoun belo s
tlechieieldl
lagnekie ialo)
Diyeciqp
ofmopagala
gatedoig ond DagIutie field asociated eaidh
lectemag hhe
(2) A eleutromagntic waves travel wjth te kama spead.Im
vacuun, a spud of all ypes of electsomagnehic
PMadiation is 3-0 xlo8 mg.
TORA NARAYAN
9911274975
Excellence in Education
STRUCTURE UNIT
OF
- 2
A ToM
Isotopes
Atoms Lsotope datined
of the as atomic
DUmber but sae eleent sgme
.
shich lqu the
Exonmple dflerewt mass nymbeys"
Protium (fgdegen
( H) eutenum(
hastre, lsotop
)ermd so: es
TotiomH jT)
99q8S ,D
jDor
Similorly DoS.
ehlor
35 Uraniym
37
23 C2 = 92)
A = 23ST)
)
238u (2 =92) 4-238
239U (2-92> A:239
)
J&obar
fom of diflerent elemeds
HAtom
aoing eBme
s mymbe but deretatomic nUmbeys Qe Calleel
Lsobes
2xgmple
,Ar C18 profens, 22 netrmy)
19 2ofons, 21 neutoons
)cmel
19
20ofens, 20 heutrny
)
lsotones!'
toms awing seme number of heutrons but lfret
Mass n umber ae callecl sotoes
Exqmple 3D
(14 potones , l4 nutrens ),
( pr0fons, 16 heetrons) 4
32
l6
, Coneept ofatomic number, Mas number
he mumbe of unt posit chargss (aried
e nucleus of an tomm is deymeel as Hu atomic by
number
Atomic number (z) = NuclegY charge or of proten
No of electrm
IMas nymber = No of protem + n0 of neutren
model o atom
Ruther forads nucleus
n The Yeatues of tus modl
main
an atom,the enHe Mass ond
in a
Amall segion
pO8)Ha chorae h
at tentni
ace
e
Concer trcteel
knoun as mucleus.
Ha pOsiHu chae of the nucleus 15 det to protohk
2) ls dfoyeut
magnituce of tte posi Hu Charge on He nuc leus
atom
l4)
fr differerd
e Mas of the nuclews i8 de to rotns cmol soms oH
each kqulng mao necely eguel to Hes
neutrl partteles
of to profen
Mass
He nucleus s Surreumded by negatively chargeel electet
Tus
wlith bal ance the Poe charg on
nectral
e nuleus
electically
e aom is
ae
nbt 8tatonasy but ae evoluing
s) he electrens
aHound
iLevoduing
e
nucleus at veny high spelels
ceound the sun
ike plants
(e) Thee electms ond the nucles a9e teld togete by
orces of cttrachon
electrosfat'c Hle nucleus
(7 Mosf of te space ii an cdom bl
omd tl ouvodoing electrony is embty:
dimitatien of Rutherfrds model
(0 Ruthortord model Gannot explain he Habil
9n aton
2) Ruthferd model also feilesl to erplatn He
, DRIAL CHENINIRYBY
NARAYAN UEADHEYAV
91137474
Cammitted for Exeellence inEducation
eiaternce of terfain olefnie
(8) rsmoda do4s not cxbladn
ina
te
Aa
trucre
Ayohogen
of tor
spechm
e
The olo n buen of electvon areund ha nucleus drd hat
ehegia
Developet teadiny to he boir odelelaten
Owing
he peiock of olevelopmut of reo piodels
to pro utherfrd mnola L of an atom te&
Corieepts playcol a a fey vole
Dual beaviour of he electo magreic ral ation
(2 Homit spectra
4lectromagnie Nacdiations
tleckvomag nehe adeotons i8 aerm of enargy olith
both- grn electic Comboneut cmd a magnete lompongt
has
chayacteribtics of electromagnctic oaekahons
() these (orsiat of electicAornd magnche
ield that oscilati
in the diyec hers perpendiculay to each othY both omd
perpanclicular to thelirecHon in ich tle loqw s
trave lling as shoun belo s
tlechieieldl
lagnekie ialo)
Diyeciqp
ofmopagala
gatedoig ond DagIutie field asociated eaidh
lectemag hhe
(2) A eleutromagntic waves travel wjth te kama spead.Im
vacuun, a spud of all ypes of electsomagnehic
PMadiation is 3-0 xlo8 mg.
