Answer:
The vertical columns (group) of the periodic table are arranged such that all it's elements have the same number of valence electrons. All elements within a certain group thus group share similar properties.
The balanced equation of the reaction shows that the mole of atoms on both sides of the reaction are equal.
<h3>What are balanced chemical equations?</h3>
Balanced chemical equations are equations in wgich the moles of each species on both sides of the reaction are equal.
To balance chemical equations, numerical coefficients are placed in front of the species in the reaction.
The balanced equations of the reaction are as follows:



Therefore, the balanced equation of the reaction shows that the mole of atoms on both sides of the reaction are equal.
Learn more about balancing equations at: brainly.com/question/11904811
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<h3><u>Answer</u>;</h3>
pH = 4.38
<h3><u>Explanation;</u></h3>
Consider that ;
[H3O+] = 10-pH mol/L
Therefore; the pH is the -log of the [hydronium ion].
pH = - log [H3O+]
Thus;
pH = - log (4.2 × 10^–5)
= 4.38
The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.
The balanced chemical equation for the dissolution of silver nitrate has been:

The aqueous solution of silver nitrate has been dissociated into the constituent silver and nitrate ions.
In a balanced chemical equation, the coefficient has been equivalent to the moles of each reactant forming the moles of product.
From, the balanced equation,

The given moles of Silver has been 0.854 mol. Thus, the moles of silver nitrate required has been given as:

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.
For more information about the moles produced, refer to the link:
brainly.com/question/10606802
Answer:
d) repeat
Explanation:
If the trend in a property is periodic, it means it will repeat on the periodic table.
Periodic properties on the table have a constant pattern as we move up or down a group or across a period from left to right.
- This helps to predict some of the salient properties of elements as we move through the periodic table.
- For example, on most periodic groups, metallicity increases as we move down the group and it decreases across the period.