Its number four.Hope that helps feel free to ask me questions:)
Brainliest??
U can assume that riding the bus is a faster way to get to school because it is capable of a faster speed than a bicycle
Nickel and chlorine
Ni+
Cl-
The spectator ions in the reaction between aqueous
and aqueous HCl would be
and
ions.
<h3>What are spectator ions?</h3>
Spectator ions are anions or cations that exist both as reactants and as products in a reaction. Their forms remain unchanged both in the reactants and in the products.
Aqueous
and aqueous HCl react according to the following equation:

Before the reaction,
and
existed in the reactants as
and HCl respectively. After the reaction,
and
exist as
in the product.
Thus, the spectator ions in this case are
and
ions because their forms did not change after the reaction.
More on spectator ions can be found here: brainly.com/question/28913274
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Answer:
The periodic table was made that way by the scientists who created it
Explanation:
to make things easier for the users.