Answer:
Gold
Explanation:
Platinum has an atomic number of 78.
78 + 1 = 79
The element with atomic number 79 is Gold.
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Answer: 
Explanation:
Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
A more reactive element is one which can easily lose or gain electrons as compared to the other element.
As Magnesium is more reactive than tin, it can easily displace tin from its salt solution 
and form magnesium chloride and tin in elemental form.
The balanced chemical equation is:
Answer:
more rounded the grains are the more they have been moved around
Explanation:
Generally – the more rounded the grains are the more they have been moved around (i.e. the longer the length of time or distance they have moved). Angular grains cannot have travelled far
geolsoc.org.uk
The element that has the greatest attraction for sulfur electrons is I (Iodine)
4 covalent bonds can be made in one silica atom
