什么是放射性元素

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/01 10:20:00
x]]oɕ+h˞ۋA}Ivb:I`7 ;R((R_)ɲ$KI}XHG$žSIQIiY`avWUߺu܏۟je]) Uw{*1m~?|zOɗwz*mU*et Jնq7+Mo''5Fi'\2L?RC5f?wJo&wVYeWbn!ת{wپ6n堈Yo m^O*ouYp ^?Uz{ |{jjuMgܝv?LӚ;tU~WQDgЄ]O!tT5.U~gVe֣1ENwg#dKw ̨k._~7~IW_+X+x{e;t.t{nʁl*;iDwX.*7Cq/m[fc[ ZYtvl]2 #_TgqjzI~)Ĕ;vW^}K_ҘfʭD{>nxf_D3tg6ɤJk]NKp9+G'Um6yYZ=NfYuSLq/ {~܄SCeKjjND|JʑU 篎4G:NZ~( ";.NEq%W=nOV;k;yݱ2WG#[BCx(A_#;wU2x;KgOKϧgfۛ-xYh;f~. E-I Q wACe$4L$7^Ӿe!leg>\v2kp1[AbsNc);, T;E 7jT ^qڻK*⾿w+ m$81"s zX:U3P%WӬf٣vkX3_EyHo$7h6ilph:^ڥ:r2qq`ӝhB iBEzյq7JMܑ{g.ҋS ᛓ 'x`SWi5&ة)E@4R1Cl9m9: ^0W أ ,LEvaŶ3B\1SNnW ѫT"TtL p6$( uusܗ]ĕcY.Y7A:xLu^m{tޱBNCvH '"eFǞRh:qz/cR3rdS5tnW|]ZX} :%&uGi~S/Ĭ0GMEݮnpZHyPz3f0&"6O׋hx:@@:6N4oAMG$&Lbdv)$\w&PZ`WtWkIX$R^ń*IR&/c~l*VֻIU$MI o҄W#6j)vx !"\Sy24F80 eSF`BXQLz  mP}0ODR%DuˀqDS4|%R.UVFtdʂ 7乏Ή3:"̨3;Ir;mͽ=#_z{3wI@]Vٛ.l^lP>{}CcBDޜ.^g1`x]?~13V1AOՊp444.8y A:Z 3މNQDfW2Pw]Y8*PMJM9V|)ӹ@hܞqO#Ҫ̢7^*\\mBۨ\RXILژTdWk8|BW`cJ$`?N9HVKR LdI mR!-cPg:33u;ɲ-IيdBAQJADG yrXXY<=ҥpNюKdcwy{j@$Or`Q;dxNKjD4j88V52R ~zœ8e<ѷ."?xg ߻K%)A!q w}YmMGZQex$Mȉ*͜YP35P!cN5|[WW|bıoG%$50ѻdNR7ׅ.ڒTܡDS*6&zlG#z=o}/Ǖl``3 rB C𺁉nVKF'yZSg~Ў3eICWۤUJ 2d+ v;]{ɢӠ4@pNfx[՝ v̍Iר~@?zgX~"|Hjw[ A>;=:c/;_GFxΡ!ܖ_&:{e#1 t$g$k@mHiZؓZJ8 &@Xȗ(W}hEA29̋$"1 ;mb<|c#5;ޢay)2dnвjsExpt1%p#9Q>Ҩr{!1ҥ3~cnN-ǧku8˥ `7iűh:hqsbNhN13_ܱb7~"(<3.ᵉXqN"왐>c+22q+M8HV@q qD]l-;aF'_0?xjc|9y9EWS3xvae("ȓ~ܡHUN;ן]nI'J|d%] 11QU&yS3uȺd"B[l >ϧ5fAZ߯O@+&if'OQ.]AWu_=b S3,/6Fw@BfT$ LR_bn{}JE|9;bqRĎEkB*10-{غ"N6wqƶ2RhXwT)HjFFwk]DěµlQ' 6am/<}̑ ˨5XT{"Ȭ__#1 0e]܍}w?1̩/"j'I oIۉR*'KQRD[oۿ_~~߿د~O/}1,~\'~/hk{E?VHĘs9{ {1,&^#]BAIp^5hhkdaɯ+ l9(6!(vU 4X.MD؈5ݟ KE%KPEHZb9f/blC0}c5?<=Vkol͇Rd9{dm(Y> 7e{e!= 4[)Q<׼D*,ݗ8+:˾wg#.,@KB-m$҆דJKL Q8ePKu|?D5pߴZ{k^Z bjr>u#L4[In!2v'KFm;L Ax"-=hm8󻨷oi}oHnv .^$\*o.N".}+W(7q;r;鸄 /QrŪ_DzXZo%խ\M)x\ LzF_51Tݾ$샬+At]۱("Ri6^'(wRw%쇼Kj+}t v/"oXKm E据]׈t+QH]i@RK7{R{y^' =(6|mv/FM%RmMq=Ҟd_E:W#G7WQ,&&{S9& ['m%uؚ<.Ӛ.hC롃uo0ƠDh)GSe7ZK~#!:D䮑uY}`ZIM&FKOb H 0Nha@&3&TiC9{{R6i:;iӑݭi{ד:͹݃