Question

FAST AND CORRECT PLSSS​

Answer 1

Answer:

i valence electron of Rb is 7

ii the no of shells in the Sr will be 5 because ethe elcyron configuration is 2,8,18,8,2

iii k will be metal because eit will have 1 in the outer most shell so it will donate one electron

IV Sr will have the larger atomic size

v Rb,ca,mg,be

Hope that this will help you