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The electron distribtution of the elemen...

The electron distribtution of the elements represented by the letters. A, B, C and D are so follows :
` A to ` 2,8,2 C ` to ` 2,8,8
B ` to ` 2,7 D `to ` 2,8,8,2
Now , answer the following:
(i) which one of the elements belongs to the 2nd period ?
(ii) Name the elements which belong to the same group.
(iii) Which of the elements is a noble gas ?
(iv) Which of the elements are metals ?
(v) What type of bond is likely to be formed when B and D combine ?

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