Question

donor).
(b) An element with atomic number 19 will most likely
combine chemically with the elements whose atomic
number is :
(i) 17 (ii) 11 (iii) 28 (iv) 20​

Answer 1

Answer is 1st option : 1) 17 ✓

Answer 2

Answer is option (i)17

Reason:
The atomic number 19 has electronic configuration of 2,8,8,1 and so it needs one more electron to become stable.Now the electronic configuration of atomic number 17 is 2,8,7 so if it takes one electron from 19 then it can become stable and even 19 becomes chemical stable.So they’re likely to combine!!!