Advertisements
Advertisements
प्रश्न
What are the two main features of Rutherford’s atomic model?
Advertisements
उत्तर
According to Rutherford’s model an atom consists of:
- The centrally located nucleus: The nucleus is a centrally located positively charged mass. The entire mass of the atom is concentrated in it. It is the densest part of the atom. Its size is very small as compare to the atom as a whole.
- The outer circular orbits: Electrons revolve in circular orbits (shell) in the space available around the nucleus. An atom is electrically neutral i.e., number of protons and electrons present in an atom are equal.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
An ion which has a positive charge is called a ..................
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
From the symbol `""_15^31"P"`, state : atomic number of phosphorus
What is meant by the 'atomic number of an element'?
If an atom ‘A’ has atomic number 19 and mass number 39, state –
- Its electronic configuration.
- The number of valence electrons it possesses.
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Oxygen – \[\ce{^16_8O}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Carbon [At. no. = 6, Mass no. = 12]
When an atom gives electrons from its outermost shell, it becomes ______ charged.
K and L shells can accommodate a maximum of 2 and 8 electrons respectively.
An element has 2 electrons in its N shell.
What is its atomic number?
