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meriva
2 years ago
6

An element forms an oxide, E₂O₃, and a fluoride, EF₃.(a) Of which two groups might E be a member?

Chemistry
1 answer:
Fittoniya [83]2 years ago
8 0

a) The E might belong to group 13.

As the formula of a chemical compound is derived by the cross multiplication of the valency of the atoms. As formula of the given oxide is  and valency of O atom is -2, therefore valency of element E must be +3 in order to obtain E2O3.

Also, in EF3, the valency of E will be +3 because there are three atoms of fluorine who has an individual valency of -1. Thus, e will have the valency of +3.

The Group 13 is the boron group which has the following elements:

  • Boron
  • Aluminium
  • Gallium
  • Indium
  • Thallium

All these elements have the valency of +3.

To know more about Valency, refer to this link:

brainly.com/question/12717954

#SPJ4

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the Americans maintained their control of Bunker Hill.

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Explanation:The Battle of Bunker Hill in 1775 was considered a victory for the Continental army because

the Americans maintained their control of Bunker Hill.

the British army sustained heavy casualties.

the Americans forced British soldiers to retreat to Boston.

the British army was forced to use most of its ammunition.The Battle of Bunker Hill in 1775 was considered a victory for the Continental army because

the Americans maintained their control of Bunker Hill.

the British army sustained heavy casualties.

the Americans forced British soldiers to retreat to Boston.

the British army was forced to use most of its ammunition.The Battle of Bunker Hill in 1775 was considered a victory for the Continental army because

the Americans maintained their control of Bunker Hill.

the British army sustained heavy casualties.

the Americans forced British soldiers to retreat to Boston.

the British army was forced to use most of its ammunition.The Battle of Bunker Hill in 1775 was considered a victory for the Continental army because

the Americans maintained their control of Bunker Hill.

the British army sustained heavy casualties.

the Americans forced British soldiers to retreat to Boston.

the British army was forced to use most of its ammunition.The Battle of Bunker Hill in 1775 was considered a victory for the Continental army because

the Americans maintained their control of Bunker Hill.

the British army sustained heavy casualties.

the Americans forced British soldiers to retreat to Boston.

the British army was forced to use most of its ammunition.

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