Four elements P; Q; R and S have atomic numbers of 4, 10, 12, and 14 respectively. Which of these elements is a noble gas?
A. P
B. Q
C. R
D. S
Correct Answer:
Option B = Q
Explanation
They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.
Veterinary medicine is the branch of medicine that deals with the prevention, diagnosis, and treatment…
Anthropology is the scientific study of human beings and their cultures. It encompasses a wide…
Sociology is the scientific study of human society, culture, and behavior. It examines the social…
Social Work is a profession dedicated to helping individuals, families, and communities to cope with…
Religious studies is an academic discipline that explores the beliefs, practices, and history of various…
Public administration is the field of study and practice that focuses on the organization and…