Title ,মৌলের পযার্য়বৃও ধর্ম ✅

†g.‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb  Final Revision Batch 1 †g.‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb Periodic Properties and Bonding in Elements Z...Zxq Aa ̈vq Topicwise Board CQ Analysis eûwbe©vPwb cÖkœ UwcK 2018 2019 2021 2022 2023 †gvU eøK †g.jmg~n I G‡`i ag©vewj 3 2 3 6 5 19 †g.‡ji ch©ve„Ë ag© Ñ 8 13 9 8 38 ivmvqwbK eÜb (AvqwbK, mg‡hvRx, mwbœ‡ek eÜb) 1 4 5 6 4 20 msKivqb, †h.‡Mi AvK...wZ I eÜb †KvY 1 3 11 11 8 34 †cvjvwiwU, †cvjvivqb, dvRv‡bi bxwZ Ñ 5 6 3 2 16 nvB‡Wav‡Rb eÜb, f ̈vÛviIqvjm eÜb Ñ 2 3 3 5 13 RwUj †h.‡Mi bvgKiY, msKiY 1 1 3 7 5 17 m„Rbkxj cÖkœ UwcK 2018 2019 2021 2022 2023 †gvU eøK †g.jmg~n I G‡`i ag©vewj 2 4 3 5 6 20 †g.‡ji ch©ve„Ë ag© 2 6 9 8 9 34 ivmvqwbK eÜb (AvqwbK, mg‡hvRx, mwbœ‡ek eÜb) Ñ Ñ 3 1 3 7 msKivqb, †h.‡Mi AvK...wZ I eÜb †KvY 2 5 14 9 12 42 †cvjvwiwU, †cvjvivqb, dvRv‡bi bxwZ 2 4 3 3 4 16 nvB‡Wav‡Rb eÜb, f ̈vÛviIqvjm eÜb 2 3 4 6 3 18 RwUj †h.‡Mi bvgKiY, msKiY Ñ 2 1 2 3 8 * we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n eøK †g.jmg~n I G‡`i ag©vewj 1. †Kvb †g.j †Rvov ch©vq mviwYi GKB ch©vqfy3? [Xv. †ev. 23; w`. †ev. 23] Li, Na Mn, Fe Ar, Rn Al, Ga DËi: Mn, Fe e ̈vL ̈v: Mn(25)  1s2 2s2 2p6 3s2 3p6 3d5 4s2 ; ch©vq-4 Fe(26)  1s2 2s2 2p6 3s2 3p6 3d6 4s2 ; ch©vq-4 2. wb‡Pi †KvbwU g„rÿvi †g.j? [Xv. †ev. 23; P. †ev. 23] Ca Na Si P DËi: Ca e ̈vL ̈v: MÖæc-2 Gi †g.jmg~n‡K g„rÿvi avZz ejv nq| Ca(20)  1s2 2s2 2p6 3s2 3p6 4s2 ; MÖæc-2 myZivs, K ̈vjwmqvg (Ca) GKwU g„rÿvi †g.j| 3. p-eøK †g.‡ji msL ̈v KqwU? [P. †ev. 23; iv. †ev. 23] 14 27 36 41 DËi: 36 e ̈vL ̈v: s-eøK †g.j 14 wU ; d-eøK †g.j 41 wU ; p-eøK †g.j 36 wU f-eøK 27 wU 4. ch©vq mviwY‡Z †Kvb eø‡K AavZzi msL ̈v †ewk? [iv. †ev. 23] s p d f DËi: p e ̈vL ̈v: s I d eø‡K avZzi msL ̈v †ewk| ch©vq mviwY‡Z we` ̈gvb 6wU AavZz (B, Si, Ge, As, Sb, Te) p-eø‡K Aew ̄ Z| 5. wb‡Pi †KvbwU iwOb †h.M? [Kz. †ev. 23] ScCl3 MgCl2 Cu2Cl2 CoCl2 DËi: CoCl2 e ̈vL ̈v: Ae ̄ všÍi avZzi AwaKvsk †h.MB KwVb Ae ̄ vq ev `ae‡Y iwOb nq| KviY Ae ̄ všÍi avZzi Avqb ̧‡jvi d Dckw3 ̄Íi Am¤ú~Y© _v‡K| Z‡e †hmKj Ae ̄ všÍi avZzi Avq‡b d-AiweUvj k~b ̈ _v‡K, †hmKj avZz mg~n eY©nxb †h.M MVb K‡i| myZivs CoCl2 GKwU iwOb †h.M|
2  Chemistry 1 st Paper Chapter-3 6. †KvbwU A¤øagx© A·vBW? [h. †ev. 23] CO2 ZnO B2O3 Al2O3 DËi: CO2 e ̈vL ̈v: A¤øxq A·vBW (Acidic Oxide): AavZzi †h mKj A·vBW cvwbi mv‡_ wewμqv K‡i GwmW Ges ÿv‡ii mv‡_ wewμqv K‡i jeY Drcbœ K‡i Zv‡`i‡K A¤øxq ev A¤øag©x A·vBW e‡j| D`vniY ̄^iƒc: CO2, SO2, SO3, NO2, N2O5, P2O5 BZ ̈vw`| 7. †KvbwU Dfag©x A·vBW? [wm. †ev. 23] Al2O3 Na2O2 KO2 Fe2O3 DËi: Al2O3 e ̈vL ̈v: avZzi †hmKj A·vBW GwmW ev ÿviK Df‡qi mv‡_ wewμqv K‡i jeY I cvwb Drcbœ K‡i G‡`i Dfag©x A·vBW e‡j| 8. Dfag©x A·vBW †KvbwU? [w`. †ev. 23] ZnO MgO CaO SO3 DËi: ZnO e ̈vL ̈v: BeO, Al2O3, Ga2O3, SnO2, PbO2 Dfag©x A·vBW| 9. †KvbwU cÖkg A·vBW? [wm. †ev. 23] NO N2O5 N2O3 NO2 DËi: NO e ̈vL ̈v: N2O I NO n‡jv cÖkg A·vBW| 10. A·vB‡Wi ms‡KZ †KvbwU? [h. †ev. 23] O2 O 2– 2O2 O 2– 2 DËi: O 2– 11. f-eøK †g.j ̧‡jv‡K Kx ejv nq? [h. †ev. 23] gy`av avZz Ae ̄ všÍi avZz g„rÿvi avZz AvšÍtAe ̄ všÍi †g.j DËi: AvšÍtAe ̄ všÍi †g.j 12. †KvbwU Ae ̄’všÍi †g.j? [e. †ev. 23] Zn Cu Sc K DËi: Cu e ̈vL ̈v: Ae ̄ všÍi †g.‡ji msÁv: ch©vq mviwY‡Z †hmKj d-eøK †g.jmg~‡ni myw ̄ Z Avq‡b d AiweUvj B‡jKUab Øviv AvswkKfv‡e c~Y© _v‡K wKš‧ KLbB k~b ̈ ev cwic~Y© nq bv, Zv‡`i‡K Ae ̄ všÍi †g.j e‡j| Cu(29)  1s2 2s2 2p6 3s2 3p6 3d10 4s1 ; ch©vq-4 MÖæc-IB Kcv‡ii myw ̄ Z Avq‡bi B‡jKUab web ̈vm Ki‡j †`Lv hvq, me©‡kl Kÿc‡_i †g.j d AiweUvj Ac~Y© (3d9 ) _v‡K| 13. s-eøK †g.‡ji msL ̈v KZwU? [wm. †ev. 23] 7 12 14 16 DËi: 14 14. †KvbwUi g‡a ̈ KY© m¤úK© i‡q‡Q? [g. †ev. 23] Mg, Ca Na, K B, Si P, S DËi: B, Si e ̈vL ̈v: ch©vq mviwYi wØZxq ch©vqfz3 wewfbœ MÖæ‡ci †g.jmg~‡ni wKQz ch©vqe„Ë ag© GKB MÖæcfz3 †g.‡ji †P‡q cieZ©x Z...Zxq ch©vqfz3 Zv‡`i Wvbw`‡Ki †g.‡ji mv‡_ A_©vr, †KvbvKzwbfv‡e Aew ̄ Z †g.‡ji a‡g©i mv‡_ AwaKZi wgj †`Lv hvq| G `ywU ch©v‡qi g‡a ̈ †KvbvKzwb Ae ̄ v‡bi `ywU †g.‡ji a‡g©i mv`„k ̈‡K †g.‡ji KY© m¤úK© e‡j| 15. wb‡Pi †KvbwU wgkÖ A ̈vbnvBWavBW? [Xv. †ev. 22] NO N2O3 N2O4 N2O5 DËi: N2O4 e ̈vL ̈v: N2O4 cvwbi mv‡_ wewμqv K‡i `y‡Uv GwmW HNO3 I HNO2 Drcbœ K‡i | ZvB N2O4 †K wgkÖ A ̈vbnvBWavBW ejv nq| N2O4 + H2O  HNO3 + HNO2 16. P ̈vj‡Kv‡Rb MÖæc †KvbwU? [iv. †ev. 22] 16 15 14 11 DËi: 16 e ̈vL ̈v: †cv‡jvwbqvg (Po) I wjfvi‡gvwiqvg (Lv) G `ywU †g.j e ̈ZxZ ch©vq mviwY‡Z 16 MÖæ‡ci Ab ̈me †g.j- Aw·‡Rb (O), mvjdvi (S), †m‡jwbqvg (Se), †Ujywiqvg (Te) G PviwU †g.j‡K GKwÎZfv‡e P ̈vj‡Kv‡Rb e‡j| 17. M3+ Avq‡b 23wU B‡jKUab _vK‡j M Gi cvigvYweK msL ̈v KZ? [iv. †ev. 22; h. †ev. 22] 23 24 25 26 DËi: 26 e ̈vL ̈v: Avgiv Rvwb, K ̈vUvq‡bi cvigvYweK msL ̈v = B‡jKUab msL ̈v + Pv‡R©i msL ̈v = 23 + 3 =26

4  Chemistry 1 st Paper Chapter-3 28. †KvbwU †d‡ivg ̈vM‡bwUK †g.j? [e. †ev. 21] Co Ti Cu Zn DËi: Co e ̈vL ̈v: Fe, Co, Ni Giv †d‡ivg ̈vM‡bwUK †g.j 29. cvigvYweK msL ̈vi μg Abymv‡i cÖ_g Ae ̄’všÍi †g.j †KvbwU? [wm. †ev. 21] Ti Cr Fe Ni DËi: Ti e ̈vL ̈v: Ae ̄ všÍi †g.j: d-eø‡Ki †hme †g.‡ji †Kvb myw ̄ Z Avq‡bi d-AiweUvj AvswkKfv‡e (d1–9 ) B‡jKUab Øviv c~Y© _v‡K, Zv‡`i‡K Ae ̄ všÍi †g.j ejv nq| †hgb: Ti(22) Gi myw ̄ Z Avqb Ti3+ Avq‡b, 3d1 AiweUvj Ac~Y© _v‡K, ZvB GwU cÖ_g Ae ̄ všÍi †g.j| 30. wb‡Pi †Kvb AvqbwUi Rjxq `aeY eY©nxb? [Kz. †ev. 17] Zn2+ Ni2+ Cu2+ Fe2+ DËi: Zn2+ e ̈vL ̈v: Rjxq `ae‡Y Zn2+ AvqbwU eY©nxb| KviY d AiweUvj m¤ú~Y© iƒ‡c c~Y©| 31. AlCl3 †h.‡Mi WvBgv‡i gy3 †Rvo B‡jKUab KqwU? [Kz. †ev. 16] 6 10 12 16 DËi: 16 e ̈vL ̈v: AlCl3 Gi WvBgviwU (Al2Cl6) jÿ ̈ Ki‡j †`Lv hvq, :   Cl: :   Cl:   C  l: :   C  l   C  l:   C  l: Al Al G‡Z †gvU gy3‡Rvo B‡jKUab = 3 + 3 + 2 + 2 + 3 + 3 = 16 wU  wb‡Pi DÏxcKwU co Ges cÖkœ `ywUi DËi `vI: †kawY ch©vq 15 16 2q X Y 3q Z Q [X, Y, Z Ges Q †g.‡ji cÖPwjZ cÖZxK bq] 32. DÏxcK Abymv‡i †Kvb Dw3wU mwVK? [P. †ev. 23] ÔYÕ Ges ÔQÕ †n·vn ̈vjvBW MVb K‡i ÔZÕ †g.jwU P ̈vj‡Kv‡Rb bv‡g cwiwPZ Kÿ ZvcgvÎvq †g.j ̧‡jv wØcigvYyK ÔYÕ Gi AvqbxKiY wef‡ei gvb ÔXÕ A‡cÿv Kg DËi: ÔYÕ Gi AvqbxKiY wef‡ei gvb ÔXÕ A‡cÿv Kg e ̈vL ̈v: X I Y †g.j `ywU n‡jv h_vμ‡g bvB‡Uav‡Rb (N) I Aw·‡Rb| N(7)  1s2 2s2 2p3 O(8)  1s2 2s2 2p4 GLv‡b, N Gi 2p AiweUvjwU Aa©c~Y© Ae ̄ vq Av‡Q e‡j Zv AwaK w ̄ wZkxj| d‡j N cigvYy †_‡K B‡jKUab Acmvi‡Y AwaK kw3i cÖ‡qvRb, ZvB N Gi AvqbxKiY kw3 †ewk| 33. DÏxcK g‡Z- [P. †ev. 23] i. X2Y5 †h.MwU A¤øag©x ii. Z2Y5 GKwU wbiæ`K iii. QY2 Gi ÿviKZ¡-3 wb‡Pi †KvbwU mwVK? i, ii ii, iii i, iii i, ii, iii DËi: i, ii e ̈vL ̈v: ch©vq mviwYi Ae ̄ vb Abymv‡i, X †g.jwU n‡jv bvB‡Uav‡Rb (N) Y †g.jwU n‡jv Aw·‡Rb (O) Z †g.jwU n‡jv dmdivm (P) Ges Q †g.jwU n‡jv mvjdvi (S)  X2Y5 Z_v bvB‡Uav‡Rb †c›UvA·vBW (N2O5) †h.MwU A¤øag©x; †Kbbv GwU cvwbi mv‡_ wewμqv K‡i GwmW Drcbœ K‡i|  Z2Y5 Z_v dmdivm †c›UvA·vBW (P2O5) †h.MwU AwZgÎvq RjMÖvnx nIqvq GwU Kvh©Kix wbiæ`K wn‡m‡e e ̈eüZ nq|  QY2 Z_v mvjdvi WvBA·vBW (SO2) Gi ÿviKZ¡ 3 bq eis Gi ÿviKZ¡ 2| †Kbbv GK †gvj SO2 `yB †gvj NaOH †K cÖkwgZ K‡i| SO2 + 2NaOH  Na2SO3 + H2O 34. [iv. †ev. 22; h. †ev. 22] MÖæc ch©vq  14 15 2 U 3 V W U, V Ges W †g.‡ji cÖZxK bq| DÏxc‡Ki U,V I W †g.‡ji †ÿ‡Î- (i) U Gi †K¬vivBW Av`a© we‡køwlZ nq bv (ii) W cwieZ©bkxj †hvRbx †`Lvq (iii) U I W Gi †f.Z a‡g© mv`„k ̈ we` ̈gvb wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii DËi: i I ii e ̈vL ̈v: ch©vq mviwY n‡Z, U, V, W h_vμ‡g Kve©b, wmwjKb I dmdivm| U Gi †K¬vivBW n‡”Q CCl4 | CCl4 Gi †K›`axq cigvYyi C Gi d AiweUvj †bB d‡j Av`a© we‡køwlZ nq bv| P †K¬vwi‡bi mv‡_ PCl3 Ges PCl5 †h.M MVb Kivq Gi †hvRbx h_vμ‡g 3 I 5| U I W wfbœ MÖæ‡ci †g.j nIqvq G‡`i †f.Z a‡g©i mv`„k ̈ bq|