ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Chemistry Periodic Classification Of Elements & Periodicity

Question:
Oxidation state of an element in free state is?

Option A):
Its number of electrons gained
Option B):
Its number of electrons shared
Option C):
Its number of electrons lost
Option D):
Zero

Correct Answer is Option D):
Zero