Advertisements
Advertisements
प्रश्न
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
Advertisements
उत्तर
Electronic configuration of aluminium 13 is 2, 8, 3.
APPEARS IN
संबंधित प्रश्न
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define: Relative atomic mass
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Write the full form of IUPAC.
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
An element is composed of ______ atoms.
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
Write any two observations which support the fact that atoms are divisible.
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
