Elements A, B, C, D and E have the following configuration- 5
A- 2, 3 B- 2, 8, 3 C- 2, 8, 7
D- 2, 8, 5 E- 2, 8, 8, 2
(i) Which of these are from same group?
(ii) Which of these are from same period?
(iii) Write the group no. of element A and D.
(iv) Write the formula of the oxide formed by element B.
(v) Identify the element C and D.
Answers
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1
Answer:
1)A and B are from same group.
2)B,C, and D are from same period.
3)A group is 13 and D group is 15.
4)2Al+3O=Al2O3
5)C is Chlorine and D is Phosphorous.
Answered by
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Answer:
- A and B are of same group
- B , C and D are of same period
- element A = 13th group ..., element D = 15th group
- Al2O3 is the formula of oxide formed by element B i.e. aluminium
- element C is chlorine. ............. element D is phosphorus...
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