The number of neutrons present in an element having mass number 226 and atomic number 88 is :
A. 88
B. 138
C. 314
D. 50
Answer: Option B
Solution(By Examveda Team)
The mass number is a count of the number of particles in an atom's nucleus which is made up of protons and neutrons. In other words,Mass Number = Number of Protons + Number of Neutrons.
The atomic number is the number of protons in an atom of an element, i.e., 226 = 88 + number of Neutrons. So, the number of neutrons= 226 – 88= 138.
Related Questions on Chemistry
Which of the following phenomenon is considered responsible for Global Warming?
A. Greenhouse effect
B. Fire in coal mines
C. Dry farming
D. Monsoon
E. Trade winds
The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
Join The Discussion