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QveST [7]
4 years ago
9

Of the elements fe li te u and he which are considered group b elements

Chemistry
2 answers:
kramer4 years ago
7 0
Only fe (iron) is in the group b of elements
givi [52]4 years ago
5 0

<u>Answer:</u> Iron is considered as a Group B element.

<u>Explanation:</u>

Mendeleev divided the periodic table into 8 groups, each divided into two sub-groups named as A and B. He arranged the elements according to their atomic masses.

Group A elements are considered as the elements which are present in s-block and p-block.

Group B elements are the transition elements. Transition elements are the elements that belong to d-block.

From the given elements:

Lithium (Group 1-A) and helium (Group VIII-A) are s-block elements.

Tellurium is a p-block (Group VI-A)element.

Uranium is a f-block element.

Iron is the d-block (Group VIII-B)element (transition element)

Hence, iron is considered as a Group B element.

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3 years ago
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krek1111 [17]

Answer:

1.1 × 10⁻⁶ M

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Step 1: Given and required data

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CaC₂O₄(s) ⇄ Ca²⁺(aq) + C₂O₄²⁻(aq)

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[C₂O₄²⁻] = Ksp / [Ca²⁺]

[C₂O₄²⁻] = 2.7 × 10⁻⁹ / 2.5 × 10⁻³

[C₂O₄²⁻] = 1.1 × 10⁻⁶ M

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What is the volume of a 4.0 M solution of KCl that contains 8.0 moles of solute?
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