7/22/2019 Bai Tap Chuong 2 HTTH Hoa 10 Theo Chu de Danh Cho Hs

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Ch 1

1. Cu hnh electron nguyn t nguyn t X l [ ]Ne 3s2 3p1. Xc nh v tr (, chu k, nhm) ca nguyn t X tronBTH. X l kim loi, phi kim hay kh him ? Gii thch.

2. Nguyn t cc nguyn t ln lt c Z=6,8,19,15,14,35,24,25,29.a) Vit cu hnh e cc nguyn t.b) Xc nh v tr ca cc nguyn t trong BTH. Gii thch?c) Nu tnh cht c bn ca cc nguyn t trn(nhm A).

3. Cc cation R+, Y2+ v anion X u c cu hnh electron lp ngoi cng l 3s2 3p6. Xc nh v tr ca R, Y, X tr

BTH.4. Vit cu hnh electron ca nguyn t cc nguyn t trong cc trng hp sau ? Gii thch.a) A thuc chu k 3,nhm VIA.b) B thuc chu k 2, nhm VA.c) C thuc chu k 4, nhm IA.d) Y thuc chu k 3,nhm IIIA.e) Z thuc chu k 4,nhm IVB.

5. Nguyn t ca nguyn t X ( thuc nhm IA) c tng s ht p, n, e l 58. Xc nh X v vit k hiu nguyn t X.

S:6. Cho dy cc nguyn t 3Li, 8O, 9F, 11Na. Hy sp xp cc nguyn t trn theo th t bn knh nguyn t ca ch

tng dn.7. Cho dy cc nguyn t N, P, F, O. Hy sp xp chng theo chiu gim dn tnh phi kim.

8. a. Da vo v tr nguyn t trong BTH, hy cho bit trong cc nguyn t sau: Sn, Si, P, Cl, Pb, N. nhng nguyt no c cng ha tr trong oxit cao nht ? Gii thch?b. Nhng nguyn t no sau y c cng ha tr trong hp cht vi hiro. Gii thch?F, S, P, Si, Cl, N, As, Te.

9. Cho cc nguyn t c v tr trong BTH nh sau:

a) Na thuc chu k 3, nhm IAb) Al thuc chu k 3, nhm IIIAc) N thuc chu k 2, nhm VA

Hy nu cc tnh cht ho hc c bn ca cc nguyn t trn gm:

Tnh kim loi hay tnh phi kim

Ho tr cao nht vi oxi

Ho tr vi hiro v cng thc hp cht kh vi hiro (nu c).

Cng thc oxit cao nht, hiroxit tng ng v tnh cht ca chng.

10. So snh tnh kim loi ca cc nguyn t: Na, Al, K, Mg.11. So snh tnh phi kim ca cc nguyn t: F, S, O, P.12. Sp xp cc nguyn t sau theo chiu tng dn tnh kim loi v cc oxit, hiroxit tng ng ca chng theo chi

tng dn tnh baz: Al, Ca, K, Mg.Ch 21. Oxit cao nht ca nguyn t R l R2O5. Trong hp cht kh vi hiro, R chim 82,35% v khi lng. Xc nh

nguyn t R.S: nit

2. Hp cht kh vi hiro ca mt nguyn t l RH2. Oxit cao nht ca n cha 40%R v khi lng. Tm tn ngut . S: lu hunh

3. Thnh phn phn trm ca nguyn t R trong oxit cao nht l 27,27%, trong hp cht kh vi hiro l 75%. Tm

tn nguyn t R. S: cacbon

7/22/2019 Bai Tap Chuong 2 HTTH Hoa 10 Theo Chu de Danh Cho Hs

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4. Nguyn t Y thuc nhm VIA, oxit cao nht ca Y l A, hp cht kh vi hiro ca Y l B. T khi hi ca B svi A l 0,425. Tm Y, A, B.S: S, SO3, H2S.

Ch 31. Cho 6g mt kim loi thuc nhm IIA tc dng vi nc th c 3,36l H2 bay ln ( ktc) S: canxi2. Ha tan ht 0,72g mt kim loi ha tr II trong axit HCl d th thu c 672cm3 kh H2 ( ktc)S: magie3. Nung 4,6g mt kim loi X trong khng kh cho n khi phn ng hon ton th thu c 6,2g oxit cao nht c d

X2O.4. Cho 0,64g hn hp hai kim loi X, Y thuc cng nhm IIA v 2 chu k lin tip tc dng vi dd HCl d, thu

c 448ml kh hiro (ktc). Xc nh tn 2 kim loi,S: Mg, Ca

5. Cho 5,05g hn hp hai kim loi nhm IA v thuc hai chu k lin tip vo nc (d) thu c 1,68 lt kh hiro(ktc) v dd B. Tm tn hai kim loi v khi lng cht tan c trong dd B.S: Na, K, 7,6gam.

6. Ho tan ht 39,6g hn hp hai mui cacbonat kim loi nhm IIA ng k tip nhau bng dd HCl, thu c 6,72kh CO2 (ktc). Tm tn hai kim loi.S: Ca v Sr

Ch 41. Hai nguyn t X v Y k tip nhau trong mt chu k, tng s proton trong ht nhn 2 nguyn t l 25. Xc nh

v v tr ca X, Y trong BTH.S: x l; Mg, Y l Al

2. Hai nguyn t A v B cng phn nhm chnh v thuc 2 chu k lin tip. Tng s proton trong 2 ht nhn ca 2nguyn t l 32. Tm v tr ca 2 nguyn t trong BTH?

3. Hai nguyn tX,Y ng k tip nhau trong mt chu k. Tng s khi ca chng l 51,s ntron ca Y ln hn cX l 2, s ntron ca X bng s e ca n. Xc nh X,Y.

4. Ba nguyn t A,B,C 3 chu k k tip v cng mt nhm A c tng s in tch ht nhn l 70, trong ZA>ZB>ZC. Xc nh 3 nguyn t.

5. Ba nguyn t X,Y,Z c tng s n v in tch ht nhn l 42, chng thuc cng 1 chu k v 3 nhm lin tip

nhau trong BTH. Vit cu hnh e v cho bit tnh cht ho hc ca chng(kim loi, phi kim, kh him).6. Phn t khi ca 3 mui XCO3,YCO3,ZCO3 lp thnh 1 cp s cng vi cng sai bng 16. Tng s ht p, n ca

ht nhn nguyn t ca 3 nguyn t trn l 120. Xc nh tn 3 kim loi.7. Hai nguyn t X,Y thuc nhm lin tip trong BTH . Tng s in tch ht nhn trong X v Y l 15. Xc nh

nguyn t X,Y8. Tng s in tch ht nhn trong nguyn t X,Y l 25, X thuc nhm VIA. Xc nh tn X,Y.9. X v Y l hai nguyn t thuc cng mt nhm A v hai chu k lin tip trong BTH. Tng s proton trong ht

nhn 2 nguyn t X, Y l 32. Xc nh X v Y.S: X l Mg, Y l Ca

10. Hai nguyn t X v Y 2 nhm A lin tip trong BTH, Y thuc nhm VA. trng thi n cht, X v Y khn

phn ng vi nhau. Tng THN ca hai nguyn t X, Y l 23+. Vit cu hnh e ca X v Y.S: X l S, Y l N

11. A v B l hai nguyn t thuc cng mt nhm A v hai chu k lin tip trong BTH. Tng s ht mang in trophn t AB2 l 64. Xc nh 2 nguyn t A, B.HD: cn xt tt c cc trng hp c th xy ra, A c th ng trn B hoc ngc li.S: A l lu hunh, B l oxi.

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