- variations in groups and periods.
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
Supply the missing word from the words given in brackets.
If an element has one electron in its outermost energy level, then it is likely to be _ (metallic, non metallic)
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The element at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Choose the correct answer from the choice given:
Which of the following properties do not match with elements of the halogen family?