Two.
The formula MgCl2 indicates that one magnesium ion (Mg2+) requires two chloride ions (2Cl-) to cancel out its charge. Each chloride ion carries a charge of -1, so two chloride ions are needed to balance the +2 charge of magnesium.
The formula for an ionic compound containing magnesium and chlorine is MgCl2. Magnesium has a +2 charge, while chlorine has a -1 charge, so two chlorine ions are needed to balance the charge of one magnesium ion.
Magnesium chloride is an neutral ionic compound. In neutral ionic compounds, the positive charge of the cations must balance out the negative charge of the anions. In the case of magnesium chloride, magnesium is the cation with an ionic charge of +2 and chlorine is the anion with an ionic charge (each) of -1. Since two chlorine anions together have a charge of -2 total, they balance out the one magnesium cation with a charge of +2.
Magnesium chloride is an neutral ionic compound. In neutral ionic compounds, the positive charge of the cations must balance out the negative charge of the anions. In the case of magnesium chloride, magnesium is the cation with an ionic charge of +2 and chlorine is the anion with an ionic charge (each) of -1. Since two chlorine anions together have a charge of -2 total, they balance out the one magnesium cation with a charge of +2.
Magnesium chloride is represented as MgCl₂ because it consists of one magnesium ion (Mg²⁺) and two chloride ions (Cl⁻). Magnesium has a +2 charge, while each chloride ion has a -1 charge. To balance the charges, two chloride ions are needed for every magnesium ion, resulting in the formula MgCl₂. This reflects the stoichiometry of the compound, ensuring overall electrical neutrality.
Two Chloride ions (2Cl-) ions are needed with their -1 charge on each one to cancel out the +2 charge of the single Magnesium ion (Mg2+). So Magnesium Chloride would have the chemical formula: MgCl2
Mg has a positive 2 charge ( wants to give away 2 electrons). Cl has a negative one charge (wants to gain an electron). Since it is a bond between a non metal and metal it is a ionic bond, therefore you cross the charges. Your answer should be: MgCl2 (where the two is written as a subscript of Cl and we don't write one because it is 'understood' )
2 cl are needed
Iron(III) chloride is an ionic bond formed between iron and chloride ions. Iron(III) has a +3 charge, while chloride has a -1 charge, so three chloride ions are needed to balance the charge of one iron ion.
The calcium ion is doubly positively charged (Ca2+) while the chloride ion is singly negatively charged (Cl-). Two chloride ions are required to balance one calcium ion in the ionic compound calcium chloride. Therefore its chemical formula is CaCl2.
The formula for cobalt chloride, a covalent compound, is CoCl2. In this compound, cobalt has a charge of +2 and chloride has a charge of -1, so two chloride ions are needed to balance the charge of one cobalt ion.
The formula for the ionic compound formed by magnesium and phosphorus atoms is Mg3P2. This is because magnesium has a 2+ charge and phosphorus has a 3- charge, so the ratio of ions needed for charge balance is 3:2.