Question

The following data represents the distribution of electrons , protons and neutrons in atoms of four elements A,B,
Element !! electron !! proton !! neutron
A !! 10 !! 10 !! 10
D !! 13 !! 14 !! 13
a) Write electronic distribution in atoms of element A and D

Answer 1

Answer:

Explanation:

element A: 2,8(neon)

element D : 2,8,3(aluminium)

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Answer 2

Answer:

(a) Electronic distribution of elements B : 2,8,6

(b) Valency of A is 1 (-1).

© Atomic number of element Bis 16.

(d) Mass number of element D is 39.