Question
Chemistry Question on coordination compounds
The number of electrons, protons and neutrons in a species are equal to 18, 16 and 16 respectively. Assign the proper symbol to the species.
A
(A) 1832 S2−
B
(B) 1632 Ca2−
C
(C) 1632 P2−
D
(D) 1632 S2−
Answer
(D) 1632 S2−
Explanation
Solution
Explanation:
The atomic number is equal to number of protons =16. The element is sulphur (S).Atomic mass number = number of protons + number of neutrons=16+16=32Species is not neutral as the number of protons is not equal to electrons. It is anion (negatively charged) with charge equal to excess electrons =18–16=2Thus symbol is 1632 S2−.Hence, the correct option is (D).