Answer:
b)
Explanation:
A substance that cannot be broken down into simpler substances by chemical means. An element is composed of atoms that have the same atomic number, that is, each atom has the same number of protons in its nucleus as all other atoms of that element.
Answer:
NiBr₃ + Al₂S₃ ⇒ NiS₃ + Al₂Br₃
Explanation:
A double replacement reaction is a reaction in which the cations switch anions.
In the reaction, the two cations are Al and Ni. The cations are Br and S.
Put each cation with the opposite anion: Ni with S and Al with Br.
The products would be NiS₃ and Al₂Br₃.
The full reaction is NiBr₃ + Al₂S₃ ⇒ NiS₃ + Al₂Br₃.
Hope that helps.
Explanation: The elements in the modern periodic table are arranged in order of their atomic numbers, which is the number of protons in the nuclei of the atoms of an element. Each element has a unique atomic number.
Answer:
Reduction
Explanation:
Oxidation is a process that involves loss of electrons.
Reduction is a process that involves gain of electrons.
In this equation, the electrons (4e-) are in the reactant side. This means that it is gain of electrons.
The reaction is a reduction reaction.
