Question

28. In the modern periodic table, l' and 'B'are two elements belonging to
first and seventeenth group respectively and both of them belong to the
third period. Write their electroric configuration. Which of them is a
metal? Why? Write the chemical formula of the compound obtained when
these two elements react with each other.
OR​

Answer 1

Answer:

Explanation:

I IS IODINE

B IS BORON

I - [Kr] 4d10 5s2 5p5

B-[He] 2s2 2p1