Chemistry
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of :
(i) aluminium
(ii) phosphorus
Related Questions
What would be the reason for an element to have atoms with differing mass numbers.
Copy and complete the following table relating to the atomic structure of some elements :
Element Atomic No. Mass No. No. of Protons No. of Neutrons No. of Electrons Beryllium 4 9 Fluorine 9 10 Sodium 12 11 Aluminium 27 13 Phosphorus 31 15 State the main postulates of Dalton's atomic theory. How does the modern atomic theory contradict and correlate with Dalton's atomic theory.
Explain in brief the experimental proofs which led to the discovery of –
(i) Electrons
(ii) Protons
(iii) atomic nucleus
(iv) neutrons.