11.7 grams to kilograms

What are the limitations of the Klmn electronic configuration style of writing

Salsk061 [2.6K]

In the KLMN electronic configuration style of writing K denotes the first shell which can hold up to two electrons, L denotes the second shell which can hold up to eight (2 + 6) or 8 electrons, M denotes the third shell which can hold up to eight (2 + 6 + 10) or 18 electrons etc.

The KLMN style of writing only indicates the number of electrons in each principal quantum number, however the spdf electronic configuration style of writing subdivides each shell into its subshells.

For instance the 3rd principal quantum number has s,p and d subshells, wherein s, p and d orbitals can have a maximum of 2, 6 and 10 electrons respectively.

5 0

3 years ago

Explain why Ra is larger than Be. With 2 points.

igor_vitrenko [27]

Explanation:

<h2>Radium(Ra)=> </h2>

atomic number=88

<h2>BERYLLIUM (Be)=></h2>

atomic number =4

why is Ra larger than Be

<h3>1. since the atomic number of Ra is greater than Be, the number of electrons is more, which means there are more number of shells present in Ra than Be. </h3><h2>(atomic Radius)</h2>

<h2>2. the more the valence electron (excluding fully filled ones) the less is the nuclear attraction force</h2><h3>since Ra has more valence electron in its outermost shell, the nuclear attraction force is less which means that Ra 's size is greater than Be.</h3>

hope it helps:)

6 0

3 years ago

What particles make up the nucleus

Komok [63]

DNA
Nucleoulos
Nuclear Membrane

4 0

4 years ago

Read 2 more answers

Which of these is a result of selective breeding? A. apples coming in many different varieties B. fish being able to breathe thr

erma4kov [3.2K]

The correct answer is A. apples coming in many different varieties.
This is because people who grow apples mix different kinds of apples in order to produce new ones, which means they are selecting the qualities they want the new apple to have in order to get the best results. B, C, and D are incorrect because that is the normal behavior or appearance of these animals - there is nothing extraordinary about them that was created thanks to selective breeding..

3 0

3 years ago

Find the energy required to melt the copper once it's reached the melting point.

belka [17]

The answer has to depend on the mass of the copper that you're trying to melt.

But there is a formula which you can calculate the energy required if you have the information of the mass. This formula requires the value called specific latent heat of fusion, which is the energy required to melt or freeze a specific mass of copper without changing its temperature but change its state.
$E = m l_{f}$
E is the total energy required, m is the mass, and lv is the specific latent heat of fusion of copper.

Usually, in questions, lv is given. But we can also look it up online which is around 205kJ kg^-1
this means, to melt or freeze a copper, we need to work the mass multiplied by 205kJ in order to calculate its total energy needed or released.

8 0

3 years ago