Question

19
B
The following data represents the distribution of electrons, protons and neutrons in
atoms of four elements A,B,C, D.
Element Protons Neutrons
Electrons
А
19
21
17
18
17
С
17
20
17
D
18
22
18
Answer the following questions :-
Describe the electronic distribution in atom of element B.
Is element B a metal or a non- metal ? Why?
Which two elements form a pair of ISOTOPES ?
(iv) Which two elements form a pair of ISOBARS ?

Answer 1

Answer:

electronic configuration of element b  would be .....   2,8,7

element b  is a non metal as it have 7 electron at its outer most shell and it would attract one electron in its  octect  to be fill .....

element b and element c are isomers means sames atomic number but different mass number  ...... c have atomic mass 37 and b have 35 atomic mass

element a and d are isobars means different atomic number but same atomic mass.....    

Explanation:

Answer 2

Answer:

write the electronic configuration of element b