4 years ago

Why is calcium harder than potassium?

1 answer:

3 0

Because calcium atoms have smaller radii than potassium atoms since calcium atoms have a greater nuclear charge. Each calcium atom will be closer to the delocalized electrons. Thus, the bonds in calcium will be stronger than that in potassium.

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How many electrons does calcian have to gain or lose to have 8 valence electrons

skelet666 [1.2K]

Answer:

two electrons

Explanation:

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.

8 0

3 years ago

Which of the following electron configurations of outer sublevels is the most stable?

Natalka [10]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
4d5 5s1 is where electron configurations of outer sublevels is the most stable. this could be a tricky question because of the fact the respond is going against the final rule that could say that 4d4 5s2 is the main sturdy. the final 2 a merely nonsence there is not any such factor as s3 or s4

4 0

4 years ago

Tell how you could distinguish between the pair of compounds by their infrared spectra: compound a ch3ch2ch2n(ch3)2 and compound

maksim [4K]

Answer:-

b. compound b will show an nh absorption while compound a will not.

Explanation:-

For compound B CH3CH2CH2NH2 there are two N-H bonds present. So it will show NH absorption.

But in compound A CH3CH2CH2N(CH3)2 there are no N-H bonds. So it will not show NH absorption.