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P. 4

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 cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW +* cøvRwgW +*
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 H-cigvYyi eY©vjx‡ZAvmgvbx, bxj, jvj-eY© †`Lv hvq| †fvR¨ †Zj|
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 gviKvwii eY©vjx‡Z †`Lv hvqmeyR, Kgjv| (v) gwi‡Pi ¸ov n‡Z jvj
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 ÷ªbwmqvg Gi eY©vjx‡Zjvj, Avmgvbx|
 wbiæ`KweMwjZ CaCl 2, dry MgSO 4, dry Na 2SO 4. Aa¨vq-3
 ¸YMZ we‡kølYwkLv cix¶v, K¨vUvqb-A¨vbvqb kbv³KiY, †g․‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb
†µv‡gv‡UvMÖvwd|
 Av‡cvjvi CCl 4, C 6H 6 ‡K‡ivwmb, wW‡Rj, †n‡Þb
(C 7.H 16). eøK ïiæ ‡kl ‡g․j msL¨v m`m¨
 ‡cvjvi H 2O, NH 3, HNO 3, SO 2, HX. s H(1) Ra(88) 14 MÖæc IA ,IIAGes.
He
p B(5) Rn(86) 36 MÖæc IIIA, IVA,
wewfbœ c×wZi cÖ‡qvM VA,VIA, VIIA,
bvg hLb c‡qvM Kiv nq cÖ‡qvM/e¨envi VIIIA (He
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‡Kjvmb KwVb Dcv`vb‡K (i) ‣Re †h․M weï×KiY| e¨ZxZ), Mc,Fl(114),
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Ki‡Z •Re c`v‡_©i •Zwi| d Sc(21) Cn(111) 41 Ts(117),
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†¶‡Î| Zn(30), 5g ch©v‡q
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cvZb 40 C Gi (i) Aweï× †ebwRb †_‡K Y(39), H f (72) †_‡K
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e¨eav‡bi ùUbvsK weï× †ebwRb| g(80), Ac(89),
wewkó Zij c`v‡_©i (ii) Aweï× je‡Yi †Kjvm Th(90), Rf(104) †_‡K
wgkªY †_‡K c„_K •Zwi| Cn(112).
Ki‡Z (iii)bvB‡Uªv‡ebwR‡bi f Ce(58) lu (71) 27 j¨vš
vbvBW I A¨vw±bvBW
cvZb| Lr(103) [La(57), Ac(89),
AvswkK cvZb ùzUbvs‡Ki cv_©K¨ (i) ‡c‡Uªvwjqv‡gi Th(90) e¨ZxZ]
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(ii) AvjKvZivi Dcv`vb  ¶vi avZGr-IA.
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(iii) jNy †Zj n‡Z †ebwRb  g„r¶vi avZGr-IIA.
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ZvcgvÎvq DØvqx, †_‡K †Zj msMÖn|
Zv‡`i‡K †fRvj (iii) ‡jgbMÖvm †_‡K ‡g․jmg~‡ni bvg
n‡Z c„_KxKiY mvBUªvm AvniY|
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(v) A¨vwbwj‡bi we‡kvab|
(vi) wewµqvq D×„Z DØvqx H Li Rb Cs Fr
DcRvZ c„_K| Na K
EaŸ©cvZb DaŸcvwZZ c`v_© ‡ebRwqK GwmW, Kc~©i,  MÖæc- IIA t †e¸bx ‡gvMjvB Kveve mwi‡q evwU‡Z ivL|
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we‡kvab Av‡qvwWb cÖf„wZ Dcv`v‡bi
we‡kvab| Sr
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n‡Z wb®‥vkb KwVb c`v_© n‡Z A¨vj‡Kvj‡qW, †÷i‡qW,
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Ki‡Z (ii) bvi‡Kj †Zj, mqvweb
†Zj, cvg †Zj, wb®‥vkb| B Al Ga In Ti
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(iv) av‡bi Kzuov I Zzl n‡Z C Si Ge Sn Pb

 cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW +*

cøvRwgW -8

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