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QveST [7]
3 years ago
9

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

Chemistry
2 answers:
kramer3 years ago
7 0
Only fe (iron) is in the group b of elements
givi [52]3 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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Answer:

D. [NO₂]²/[N₂O₄]

Explanation:

The equilibrium constant expression for a reaction is products over reactants. Since NO₂ has a coefficient of 2, it will become an exponent.

So, it would be:

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3 0
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What is the Molar Mass of Cs2SO3?​
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2 years ago
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4 0
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Thus, 0.014 mol of I2 is needed to form the given amount of NI3.

6 0
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