Question

Q7. Following are the four elements:
13A
”,
B'S
M", Q”
(i) Which two elements belong to same group?
(ii) To which period does 'B' belong?
(iii) Write the number of neutrons present in "Q"
(iv)Which element is a non metal among above?​

Answer 1

Answer:

1. no two elements belong to the same group
2. B belong to the second period
3. the number of neutrons present in Q is 12
4. bi is a non metal