Aziz o’quvchim!

Qaysi elementlar allotropik shakllarga ega emas?

A) B, O, N B) O, C, P C) S, P, O D) F, Cl, Br

3. 
   Qaysi moddalarda allotropiya hodisasi mavjud?
   

1) uglerod; 2) azot; 3) qalay; 4) yod; 5) xlor

A ) 1,2 B) 1,3 C) 1,4 D) 3,5

3. 
   Allotropik shakl o’zgarishni namoyon etadigan elementlar qatorini ko’rsating.
   

1. 
   oltingugurt, ftor, yod, rux
   
2. 
   tellur, kislorod, bariy, bor
   
3. 
   xlor, azot, brom, simob
   
4. 
   fosfor, qalay, selen, oltingugurt
   

3. 
   Allotropik shakl o’zgarishlarga ega bo’lmagan moddani aniqlang.
   

A) fosfor B) uglerod C) yod D) oltingugurt

3. 
   Allotropik shakl o’zgarishlarga ega bo’lmagan moddani aniqlang.
   

A) kislorod B) uglerod C) azot D) oltingugurt

3. 
   Allotropik shakl o’zgarishlarga ega bo’lmagan moddani aniqlang.
   
4. 
   Allotropik shakl o’zgarishlarga ega bo’lmagan moddani aniqlang.
   

A) fosfor B) temir C) vodorod D) azot

3. 
   Allotropik shakl o’zgarishlarga ega bo’lgan moddani aniqlang.
   

A) mis B) natriy C) vodorod D) oltingugurt

3.