Question

A part of periodic table is shown in the following figure. Answer the following questions. i) Write the symbol of element B. ii) Arrange elements 'A','B' and 'C' in increasing order of their metallic character. iii) What is the number of electrons in L shell of element E. iv) Name any two elements that will have properties similar to that of element 'A'.
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Answer 1

Answer:

(a) A belongs to group 17. There are 7 electrons in its valance shell. Therefore it tend to accept one electron to complete octet. Hence, it is a non-metal.