Chemistry, 16.09.2019 03:00 mstrish71oteauw

If the following elements were to form ions, what is the expectant charge?
ca
na
p

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Answer from: destyneedonnea

If Ca was to form ions, its expectant charge will be $\boxed{ + 2}$ .

If Na was to form ions, its expectant charge will be $\boxed{ + 1}$ .

If P was to form ions, its expectant charge will be $\boxed{ - 3}$ .

Further explanation:

The distribution of electrons in atomic orbitals of an atom is called electronic configuration. It is done in accordance with the following principles and rules:

1. Aufbau principle

According to this principle, the electrons are filled in various orbitals in the increasing order of their energies. The increasing order of energies of orbitals is,

1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s < 5f < 6d < 7p

2. Hund’s rule

The pairing of the electron cannot occur unless each orbital is singly occupied.

3. Pauli’s exclusion principle

This states that no two electrons in the same orbital can have the same values for all the quantum numbers. The value of spin quantum number for both electrons in the same orbital must always be different.

Ions are produced either by gain or loss of electrons. Those formed by the gain of electrons are termed as anions while those formed by loss of electrons are cations.

The atomic number of Ca is 20 and it has a configuration of $1{s^2}2{s^2}2{p^6}3{s^1}$ . It can remove two electrons from 4s orbital to achieve the stable noble gas configuration of Ar and ${\text{C}}{{\text{a}}^{2 + }}$ is formed. Therefore Ca forms an ion with a charge of +2.

The atomic number of Na is 11 and it has a configuration of ${\text{N}}{{\text{a}}^ + }$ . It can remove one electron from 3s orbital to attain the stable configuration of Ne and ${\text{N}}{{\text{a}}^ + }$ is formed. Therefore Na forms an ion with a charge of +1.

The atomic number of P is 15 and it has a configuration of $1{s^2}2{s^2}2{p^6}3{s^2}3{p^3}$ . It can gain three electrons and acquire a stable noble gas configuration of Ar and ${{\text{P}}^{3 - }}$ is formed. Therefore P forms an ion with a charge of -3.

Learn more:

Determine the ion with configuration : Identification of element which has electron configuration :

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Electronic configuration of the elements

Keywords: Ca, Na, P, +2, +1, -3, atomic number, 20, 11, 15, configuration, Aufbau principle, Hund’s rule, Pauli’s exclusion principle, distribution of electrons.

Answer from: Quest

that's just how they are

explanation:

you can't control another persons decisions, all you can do is ask that they respect yours. relationships are hard because you have to put the effort into making sure that another person feels seen, heard, and loved. as time goes on, it gets easier, you learn how to do these things without thinking. loving them becomes as easy as breathing, but every relationship will have fights, and sometimes it'll feel like you're drowning, but as long as you can talk it out and compromise, because that's truly what loving another person is, is compromise, then you'll be okay. movies and tv shows have glamorized and romanticized (pardon the pun) what a relationship would be like. real relationships aren't perfectly timed kisses in the rain, zero fights until one big one ends everything, 6 month anniversaries. real relationships are sleepy confused kisses when one person has to leave for work earlier than the other, real relationships are having small disagreements, real relationships are messy and confusing, real relationships is knowing that even if you're relationship may not last forever and this may not be the person you're going to spend the rest of your life with, that you love them, and you would do anything to see them happy. so yes, relationships are difficult, but so are many other things, relationships can be amazing but also stressful, and not just romantic i'm also talking about platonic relationships (although the primary example here was romantic) sometimes is best to leave friendships behind, so remember, always do whats going to you be happy in the long run.

Answer from: Quest

Heat of fusion= heat/mass heat of fusion = 12.03kj/36 g= 0.3342 kj/g or 334.2 j/g