Question

b) An atom has the mass number 40 and atomic number 18. An atom B has the
mass number 40 and atomic number 20.
i) What is a electronic configuration of A?
ii) What is the electronic configuration of B?
iii) Which amongst a and b is a metal?​

Answer 1

Come for S E X only Girl s

huh-ebtr-tiz

Answer 2

Answer:

Argon has atomic number of 18 and mass number of 40 calcium has atomic 20 and mass number 40 calcium and argon are examples of ------ Answer: Atoms of different elements with different atomic numbers and the same mass number are known as isobars.

mark me as brainliest