In the following diagram for the first three periods of the periodic table, five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):(i) Select the letter which represents a halogen.(ii) Select the letter which represents a noble gas.(iii) What type of bond is formed between a and b?(iv) What type of bond is formed between c and b?(v) Which element form a divalent anion?Give reasons for your choices.

In the following diagram for the first three periods of the periodic t

1.	In the following diagram for the first three periods of the periodic table, five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):(i) Select the letter which represents a halogen.(ii) Select the letter which represents a noble gas.(iii) What type of bond is formed between a and b?(iv) What type of bond is formed between c and b?(v) Which element form a divalent anion?Give reasons for your choices.
Answer» In the following diagram for the first three periods of the periodic table, five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols): (i) Select the letter which represents a halogen. (ii) Select the letter which represents a noble gas. (iii) What type of bond is formed between a and b? (iv) What type of bond is formed between c and b? (v) Which element form a divalent anion? Give reasons for your choices.