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Inessa05 [86]
3 years ago
9

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic stru

cture. [6 mark]
Chemistry
1 answer:
Alex777 [14]3 years ago
6 0
Metal period- Reactivity Gets smaller as you move from left to right.
Group- Reactivity  gets bigger as you move down a group.
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Identify from the following list of molecules and ions which behave as Lewis acids: CO2, NH3, BCl3, Fe3+. (A) CO2 and NH3 (B) NH
Anettt [7]

Answer : The correct option is, (D) CO₂, BCl₃, and Fe³⁺

Explanation :

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

(a) CO_2

It is a Lewis-acid because it can accepts electron pairs.

(b) NH_3

It is not a Lewis-acid because it can not accepts electron pairs but it is a base because it can donates and accept hydrogen ion.

(c) BCl_3

It is a Lewis-acid because it can accepts electron pairs because it has an incomplete octet and an empty 2p orbital.

(d) Fe^{3+}

It is a Lewis-acid because it can accepts electron pairs.

Hence, the ions which behave as Lewis acids are, CO₂, BCl₃, and Fe³⁺

6 0
3 years ago
What describes a system that consists of sugar dissolving in water
ValentinkaMS [17]
<h3>♫ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ♫</h3>

➷ It is a solution or mixture

<h3><u>✽</u></h3>

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6 0
3 years ago
Write an equation for the reaction that takes place in a luminous flame assuming the laboratory gas is Butane
Margarita [4]

Answer:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

Explanation:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

4 0
2 years ago
What is the element that has the ending configuration of 4d^4​
Maru [420]

Answer:

Molybdenum

Explanation:

Molybdenum is a chemical element with the symbol Mo and an atomic number of 42. This implies a total of 42 electrons in its orbital.

The atomic weight of  Mo is 95.94g/mol.

Using the sublevel notation system, the electrons can be filled into the orbitals as shown below:

                      1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d⁴

        The ending configuration of this element is therefore 4d⁴

7 0
3 years ago
Place the items in order from the largest wavelength to the shortest wavelength.
balandron [24]

The order from longest to shortest wavelength is;

Radio wave  (longest wavelength)

Microwave

Infrared

Red visible

Orange visible

Yellow visible

Green visible

Blue visible

Violet visible

Ultraviolet (UV)

X-ray

Gamma radiation (shortest wavelengths)


This is referred to as the electromagnetic spectrum.


3 0
3 years ago
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