The atomic mass of Calcium is _______.
40
Understanding the Atomic Mass of Calcium
The question asks about the atomic mass of Calcium. Atomic mass is a fundamental property of an element found on the periodic table. It represents the average mass of atoms of an element, calculated using the relative abundance of isotopes.
Finding the Atomic Mass of Calcium (Ca)
Calcium, symbolized as Ca, is an alkaline earth metal. Its atomic number is 20. Looking at a standard periodic table, the atomic mass of Calcium is typically listed near its symbol and atomic number.
The accepted standard atomic weight for Calcium is very close to 40.078 unified atomic mass units (u).
Comparing with the Options
Let's compare this value to the given options:
- Option 1: 42
- Option 2: 40
- Option 3: 38
- Option 4: 39
The value 40 is the closest and most commonly used rounded value for the atomic mass of Calcium in many calculations and educational contexts.
Conclusion
Based on the standard atomic mass, the value of 40 is the most accurate choice among the given options for the atomic mass of Calcium.
Important Questions from Structure of Atom
According to J.J. Thomson model of atom, positive charge is - Idenfity
Ions differ from their corresponding atoms in
- How many moles of He atoms are present in its 20 u mass ?
Which of the following electron transition in hydrogen atom will require largest amount of energy?
A species having 8 electrons in the third shell is very reactive while the other species having 8 electrons in the third shell is very inactive they are :
