Consider the following table:
Element | Atomic no. | No. of neutrons |
---|---|---|
A | 3 | 4 |
B | 9 | 10 |
C | 13 | 14 |
D | 17 | 18 |
E | 18 | 22 |
(i) How many protons are there in an atom of D?
(ii) What is the mass number of B?
(iii) Write electron distribution of C.
(iv) What is the valency of E?
(v) What is the number of electrons present in a monovalent positive cation of A and a monovalent anion of D?
(i) Number of protons in D:
(ii) Mass number of B:
(iii) Electron distribution of C:
(iv) Valency of E:
(v) Number of electrons in a monovalent positive cation of A and a monovalent anion of D: