Advertisements
Advertisements
प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Advertisements
उत्तर
Atomic number 19
Electronic configuration (19): 2,8,8,1
APPEARS IN
संबंधित प्रश्न
The atomic number and the mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement.
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Phosphorus – \[\ce{^31_15P}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
An element ‘A’ has mass number 23 and atomic number 11. State the –
- no. of neutrons in its shell,
- electronic configuration of the element ‘A’.
What is a neutron?
Give short answer:
what is the atomic mass number? mention its formula.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
Electrons revolve around the nucleus in definite open shells.
