Advertisements
Advertisements
प्रश्न
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
Advertisements
उत्तर
Nucleons: Particles which constitute the nucleus are called nucleons.
Protons and neutrons are nucleons.
The atomic mass of phosphorus = 31
Atomic number = 15
APPEARS IN
संबंधित प्रश्न
Explain the Atomic number with example.
What are the atomic numbers of elements whose outermost electrons is represented by 3p5?
Write true or false for the following statement
An atom on the whole has a positive charge.
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
State why the atomic weight of an element is also termed relative atomic mass.
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Argon – \[\ce{^40_18Ar}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. Mass number of an atom is the number of protons and | A: Electron |
| 2. The sub-atomic particle with a negligible mass. | B: Argon |
| 3. An atom having stable electronic configuration. | C: Nitrogen |
| 4. A molecule formed by sharing of electrons [covalency] | D: Sodium |
| 5. A metallic atom having unstable electronic configuration. | E: Neutrons |
What is mass number of an atom?
______ = No. of protons = No. of the electrons.
Compare the charge and mass of protons and electrons.
