Question

Q.3. The following data represents the distribution of electrons, protons and neutrons in an atom of four
elements A,B,C,D.
Elements Protons
Electrons
19
19
B
17
17
Neutrons
21
18
20
22
17
17
С.
18
18
Answer the following questions:
ii)
iii)
Is element B a metal or a non-metal? Why?
Which two elements form a pair of isotopes?
Which two elements form a pair of isobars?​

Answer 1

Answer:

B is a non metal answer

here is your answer

Answer 2

b is non metal because it is electro negative

b and c

a and d