Answer:
check out the image below
Explanation:
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Answer:
c)4 neutrons
Explanation:
The atomic mass of Lithium is 7.
we know,
atomic mass=no. of proton+ no. of neutron
So, no. of neutron = atomic mass - no. of proton=7-3=4
Note: Atomic number is the number of protons.
Hope, this helps you.
We Know, Atomic number of Gold (Au) = 79
1) Number of Protons = Atomic number = 79
Number of Electrons = Number of Protons = 79
Number of Neutrons = mass number - Atomic number = 195-79 = 116
2) Atomic number = 79 [ written on top of the element ]
Mass number = 195 [ written on bottom of the element ]
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It would be a Strong Acid
Balanced chemical reaction: Fe₂O₃<span> + 2Al → 2Fe + Al</span>₂O₃.
Fe₂O₃ is iron(III) oxide.
Al is aluminium.
Fe is iron.
Al₂O₃ is aluminium oxide.
In thermite reaction<span> elemental aluminium reduces the iron (III) oxide or some other metal oxide.
Mole ratios from chemical reaction:
n(</span>Fe₂O₃) : n(Al₂O₃) = 1 : 1.
n(Fe₂O₃) : n(Al) = 1 : 2.
n(Fe₂O₃) : n(Fe) = 1 : 2.