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  1. KU TRU0NC t)H SU'Pr{aM TP. HCM noa xA ruol cntr ncnia vrET NAM cONG Kt{oA vaT Lv lip. Tg do - IIirnh phric DQc oet DE TTII HET HQC PHAN CO HQC LUqNG TTIUAIT HQC 2008-2009 (Thdi gian ldm bai 90 phrit kh6ng te tncri gian phrit dd) cnu r. a) c:hri'g minn giao ho6n'ru: tr,;;i=",ir$-ir1). n ti'h d6 dp clq,ng [n,o,,]. ftU:,i,f ,dlrt,L,f L, b) cho toiln rtr ib, - 2by.Hay tinh c6c giao ho6n = . II. Mrit Cii'u electron trong nguyen tir hidro c6 trang th6i dugc m6 t6 bang; hdm sting da chuAn h6a 3 ll"'(r)' -8'l r -'(t) + ffi L.R,,, Vt(r.0,q)= coso t'_ _ =(+)1(r-ft)t*, *2 "', d0= tI. )la,, rrong t' c16 R2e(r) nr,,1r1=(+); 2a^ a0 mee: kinh gohr thri nhAt. bdrr a) tinh c6c gid tri trung binh (r), (p) .iiu electron rr4ng th6i rr€n,
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