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2 years ago

Which of the following species has the same number of protons as fe³⁺?

1 answer:

5 0

The number of protons in an element is the atomic number of the element, and it is not affected by the charge on the element. Hence, the species which has similar Number of proton is Fe²⁺

To know the species which the same number of protons as Fe³⁺, we need to obtain the atomic number of the elements on the periodic table :

Fe³⁺, Atomic number = 26; Number of protons = 26

Mn³⁺, Atomic number = 25; Number of protons = 25

Co²⁺, Atomic number = 27; Number of protons = 27

Fe²⁺, Atomic number = 26; Number of protons = 26

Ni, Atomic number = 28; Number of protons = 28

Therefore, only Fe²⁺ has the same number of protons as Fe³⁺

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2 years ago

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Which groups of people were excluded from the principles of unalienable rights in the declaration of independence? select all th

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2 years ago

According to the second law of thermodynamics, it is impossible for ____________.

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2 years ago

A company ordered $400 worth of muffins. Bran muffins cost $2 each and blueberry muffins cost $4 each. If the company ordered tw

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40 Bran Muffins

80 Blueberry Muffins

Explanation:

Let the number of Bran muffins ordered = x

The number of Blueberry muffins ordered = 2x (it is given that the number of blueberry muffins is twice the number of bran muffins)

The cost of Bran muffins ordered = Number of Bran muffins * cost of 1 muffin

Cost of Bran muffins ordered = x * 2

Cost of Bran Muffins ordered = $ 2x

The cost of Blueberry muffins ordered = Number of Blueberry muffins * Cost of 1 blueberry muffin

Cost of Blueberry muffins ordered = 2x * 4

Cost of Blueberry muffins ordered = $ 8x

Since the sum of costs of Blueberry and Bran muffins is $400

Cost of Bran muffins + Cost of Blueberry muffins ordered = 400

2x + 8x = 400

10x = 400

x = 40

Hence, the number of Bran muffins ordered is 40

we are told that the number of Blueberry muffins is twice the number of Bran muffins

So,

Blueberry muffins = Bran muffins * 2

Blueberry Muffins = 40 * 2

Blueberry muffins = 80

So, the number of Blueberry muffins is 80

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3 years ago