Question

An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?

Answer 1

Hey frnd..
.
The answer will be 17..
plz mark it as brainlist ☺

Answer 2

given that the atom has electronic configuration has 2,8, 7 and you have to find out the atomic number of this element is 17 and chemical similar to the F(9) with the same configuration as 2,7.

Hope it is right answer for student can simply get can ideas of it at the time of the reading it.