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BARSIC [14]
3 years ago
7

Under what circumstances might be important to know the activity tendencies of elements?

Chemistry
1 answer:
ad-work [718]3 years ago
3 0

Answer: It is very important to know the activity tendencies of the elements. The activity tendencies tells us about whether the element is reactive or not.

In the redox-reaction where there is a need to know the oxidizing agent and reducing agent, we can know it easily from the activity tendencies. The elements lying above the reactivity series are better reducing agents.

In the substitution reactions, the activity tendencies helps us to know which element will replace the other. The element lying above in the series will replace the element lying below it.

MX+NY \rightarrow MY+NX

where, N is an element that lies above in the reactivity series

M is an element that lies below in the reactivity series

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The octet rule states that atoms will gain, lose, or share valence electrons to get a full outer shell (orbital). Explain in you
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Answer:

In covalent bonding, the octet rule is important because sharing electrons gives both atoms a full valence shell. As a result, each atom can consider the shared electrons to be part of its own valence shell.

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6 0
3 years ago
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Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine
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D. CuCl2 copper(2)chloride 
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3 years ago
Why are metals <br> electropositive in nature<br>​
Mariana [72]

Answer:

The tendency of metals to lose electrons inorder to get stability is called electropositive nature ofmetals. In general most of the metalslose electrons from their valence shell due to weak force of attraction on the outermost shell.

7 0
3 years ago
Identify the group number of following oxides/hydrides in Mendeleev
Ivan

Answer:

See explanation

Explanation:

The oxides or hydrides are formed by exchange of valency between the two atoms involved. The group of the atom bonded to oxygen or hydrogen in the binary compound can be deduced by considering the subscript attached to the oxygen or hydrogen atom.

Now let us take the journey;

R2O3- refers to an oxide of a group 13 element, eg Al2O3

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5 0
3 years ago
A certain gas is present in a 15.0 LL cylinder at 2.0 atmatm pressure. If the pressure is increased to 4.0 atmatm the volume of
Helga [31]

Explanation:

According to Boyle's law,  pressure of a gas is inversely proportional to its volume at constant temperature and moles.

Mathematically,       P = \frac{k}{V}

where,     k = proportionality constant

Also, formula for initial pressure and volume is as follows.

              P_{i} = \frac{k_{i}}{V_{i}}

or,           k_{i} = P_{i} \times V_{i}

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Now, we will calculate the value of k_{f} as follows.

             k_{f} = P_{f} \times V_{f}

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Hence, as k_{i} = k_{f} this means that it signifies that gas obeys boyle's law.

6 0
3 years ago
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