Atomic Mass and Mass Number
Trending Questions
An atom has a mass number 35 and the atomic number 17. The number of neutrons in its nucleus are ________.
In the diagram given below, structure of atom is depicted, where we are able to see orbits and electrons. How many neutrons and protons are present in the nucleus?
20 protons and 20 neutrons
19 protons and 20 neutrons
19 neutrons and 20 protons
20 electrons and 19 protons
- 1
- 11
- 3
- 8
From the symbol give :
(b) Mass number of sulphur.
What do you understand by the term ‘mass number’?
From the symbol state:
Mass number of Ca
What is atomic number ?
Three different atoms of hydrogen are represented as . What do the subscripts and superscripts represent?
The ion of an element has 3 units positive charge. The mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
13
10
14
16
Complete the following:
Carbon contains _______ protons and ________ neutrons.
- 3
- 8
- 11
- 1
The atom of an element X has 18 protons, 22 neutrons and 18 electrons. The atomic number of the element is _______.
- 22
- 36
- 40
- 18
- Mass number of B is 40
- Mass number of A is 12
- Atomic number of B is 18
- Mass number of A is 25
- A-Z
- Z
- Z + A
- Z - A
- False
- True
- Number of protons + number of neutrons
- Number of protons
- Number of electrons
- Number of electrons + number of protons
Statement 2: The atomic number is the number of protons in an atom.
- Both statements are true.
- Both statements are false.
- Only statement 1 is true.
- Only statement 2 is true.
- True
- False
- 1615Y
- 1531Y
- 3115Y
- 1516Y