The valency of magnesium and chlorine in magnesium chloride is:a)Magnesium 2 and chlorine 1b)Magnesium 2 and chlorine 2c)Magnesium 1 and chlorine 1d)Magnesium 1 and chlorine 2Correct answer is option 'A'. Can you explain this answer?

Question

Answer

Magnesim has +2 valency because it has capability to loose it 2 electrons .Chlorine has -1 valency because it requires one electron to become stable and cation as it has only 7 electrons in its outermost shell.

Answer

Because the atomic number of magnesium is 2,8,2 so magnesium lose their electron . mg valence is 2 and chlorine has 17 atomic number. electronic configuration is 2,8,7 so it gain 1 electron to complete it's octet

Answer

The valency of an element refers to its combining capacity with other elements to form chemical compounds. In the case of magnesium chloride (MgCl2), we need to determine the valencies of magnesium and chlorine.

- Magnesium Valency:
Magnesium belongs to Group 2 in the periodic table, which is also known as the alkaline earth metals. Elements in this group typically have a valency of +2. This means that magnesium tends to lose two electrons to achieve a stable electronic configuration, resulting in a +2 charge.

- Chlorine Valency:
Chlorine belongs to Group 17 in the periodic table, which is also known as the halogens. Elements in this group typically have a valency of -1. This means that chlorine tends to gain one electron to achieve a stable electronic configuration, resulting in a -1 charge.

- Formation of Magnesium Chloride:
When magnesium reacts with chlorine, magnesium tends to lose two electrons and chlorine tends to gain one electron. This allows both elements to achieve a stable electronic configuration. As a result, two chlorine atoms combine with one magnesium atom to form magnesium chloride (MgCl2).

- Ionic Bonding:
The combination of magnesium and chlorine in magnesium chloride is an example of ionic bonding. In this type of bonding, electrons are transferred from the metal (magnesium) to the non-metal (chlorine). The metal loses electrons to form a positively charged cation, while the non-metal gains electrons to form a negatively charged anion. The opposite charges attract each other and hold the compound together.

- Charge Balance:
In the case of magnesium chloride, the magnesium ion (Mg^2+) has a charge of +2 due to the loss of two electrons, while each chlorine ion (Cl^-) has a charge of -1 due to the gain of one electron. To balance the charges, two chloride ions are needed for every one magnesium ion, resulting in the formula MgCl2.

In conclusion, the valency of magnesium in magnesium chloride is +2, while the valency of chlorine is -1. Therefore, the correct option is A) Magnesium 2 and chlorine 1.

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