Question One: (2) A diatomic molecule
Question two: (3) nature of bonds between gold atoms
More on question two: Gold and metals in general are malleable because of the so called "sea of valence electrons", which is generally unstable allowing it to be malleable and conductive.
The answer for question 1 is (2) diatomic molecule.
The answer for question 2 is (3) nature of bonds
Two atoms of bromine bond together to form a diatomic molecule, specifically Br2. The bonding occurs through the sharing of electrons in a nonpolar covalent bond. Additionally, gold's malleability is due to the nature of the bonds between its atoms, allowing them to slide past each other easily.
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