Answer:
As electro-negativity decreases from Florine to downwards in the group and only Florine is above Chlorine, so Florine should react with sodium chloride solution to produce chlorine.
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Protons and Neutrons are the same size and have the same mass (1Amu)
If you notice, atomic mass is protons + Neutrons.
The mass of an electron is so small that it is often neglected in terms of calculations.
B electrons is the answer
Metallic bond
Metals are bound together by metallic bonds characterized by the sharing of free electrons among a lattice of the metal ions. This type of bonding gives metals unique properties such as strength, ductility, malleability, electrical and thermal conductivity, opacity, and luster.
This property of metal to be flattened and shaped is called malleability. When stress is applied to the metal, its atoms merely roll or slide over each other into new positions while keeping the metallic bond intact. The bonds do not break, thereby allowing the metal to be flattened out instead of crumbling or breaking into pieces.
The answer would be
A. It is mostly composed of Deciduous trees.