Ikatan Kimia (2) | Ikatan Ion (Elektrovalen) | Kimia kelas 10

Hello Assalamualaikum Hello little brothers and sisters

meet again with you on the

kinematics channel in this video we will

learn about one type of

chemical bond, namely ionic or electrovalent bonds,

well, but before that, I will

explain first about chemical bonds, yes,

chemical bonds are bonds between atoms

that occur so that the atoms that are bonded

in them have a stable electron configuration

in the previous video we have

discussed that a

stable electron configuration is the

same electron configuration as a noble gas

or group 8A, namely an

electron configuration that has valence electrons

equal to two or duplet or generally

has 8 valence electrons or octet

so it can be said that what has an

important role in chemical bonds is

valence electrons in general,

chemical bonds are divided into three types, the

first is an

ionic or electrovalent bond, the second is a

covalent bond and the third is a

metal bond, then what is the difference between

these three bonds if ionic or

electrovalent bonds are bonds that occur

between metal and non-metal atoms, if a

covalent bond occurs between a non-metal

and a non-metal, while a metal bond is

formed from metal atoms with

metal atoms and occurs in one type of

metal element, so that

the differences between these three types of bonds are clearer

we will discuss one by one yes in

this video we will discuss

ionic or electrovalent bonds Ionic bonds

are bonds formed between

metal atoms and non-metals remember yes

the metal atoms come from groups 1A 2A

and 3A while the non-metal atoms

come from groups 4A to

7A if group 8A is also non-metal yes

but because it is stable it

no longer needs to bond the

group number is the same as the

valence electrons remember if the valence electrons are

1-3 then it will tend to release

its electrons while those with

valence electrons 4-7 will tend to

accept electrons if it releases electrons it

forms positive ions and if it receives

electrons it will form negative ions from

here we can conclude that

ionic bonds are bonds that occur due to the

transfer of electrons so some

release electrons and some

receive electrons so that

a bond is formed called an

ionic bond Keh clear yes now we continue to

examples of the formation of ionic bonds the

first example of the bond formed

between the Na atom and the CL atom remember that what plays an

important role in chemical bonds

is the valence electrons so we

first determine the valence electrons of

each of these atoms yes for

Well the electron configuration is 281 means the

valence electron is one well if the

valence electron is one means Siena

will tend to release electrons

to form a positive ion which is n aplas

while CL electron configuration is 287

means the valence electron is 7 then ccl

will tend to accept one

electron to form a CL Min ion

because Erna releases one electron and CL

accepts one electron then a

bond occurs and a NaCl compound is formed if

we make the Lewis formula the

valence electron enabler 1cl has 7 valence electrons

then name releases one

electron to form a Na + ion and CL

Min receives one electron from Ena

to form a CL Min ion so an

ion bond occurs and a NaCl compound is formed

so this ion bond is okay

now we move on to the

second example for example we want to increase the

MG atom and CL atom We determine the

valence electrons yes mg-12 means 282 the

valence electrons are two while cl-17 means

287 then the valence electrons are 7

to be stable MG must release two

electrons to form the MG 2 + ion

while CL to be stable he must

accept one electron so

form CL Min ions then What compound is

formed if the two bond

Pay attention to how to determine the compound

so that a bond is formed the number of electrons

released must be the same as the number of

electrons received meaning the number of

positive charges must be the same as

the number of negative charges we see

here the mv is 2 + while the cell is 1 min

meaning the CL must be there

Hi well the mv is 11 no need to write CR

is two so the compound formed

is MgCl2 understand yes Now let's try

another example for example or mail binds

to the s atom for the

electron configuration for KL 283 means the

valence electrons are three for es 286

means the valence electrons are 6 KL

forms an al3 plus ion while es will

form an s ion 2 minutes then we

equalize the number of charges the easy way

we just multiply by noon so here Al

the number is two to adjust to the charge of

es while the number of es is three

to adjust to the charge of KL so 2

Al 3 plus plus 3S 2 min

so the compound formed is

al2s three Well, to make it easier

also just detail the film so the number of EMG

adjusts to the charge of c l which is

one While the number of CL adjusts

to MG charge is two, how do you understand

? Now I will give you an

easier way to determine

compounds formed from ionic bonds.

The way we remember the noble gas atoms

or 8A along with their atomic numbers

is how to remember it. It's amazing that Grandma Arie's

hair is so curly, the atomic numbers of

each are 2-10-18 3654 and 86

other atoms to stabilize must

follow the electron configuration of noble gases,

meaning the number of electrons must also be the

same. Well, let's take the example from before,

namely MG and CL. MG has 12 electrons

while CL has

17 electrons. MG has 12 electrons, meaning MG

must follow the number of electrons of the

noble gas that is closest to it. The closest

is 10, namely Siene

Ratih's. The way is 12 minus 10 means

positive two, yes, that's why MG forms ions

for lessons, while CL has

17 electrons, meaning it must follow the

closest one, which is 18.

Siar's oil means 17 minus 1817 minus

18 is min 1, meaning the CL charge is

mint, so the compound formed is

just times silent, yes, its mv 1cl

two means MgCl2

Hi so by using this method

we no longer need to make

electron configurations and determine the

valence electrons let's try

another example for example atom ar0 atom 57

binds to atom D with atomic number 84

the number of electrons is 57 means to be

stable Who should be followed

closest yes that is exe whose

atomic number is 54 means 57 minus 54

is positive 3 then the charge a = 3 plus

next D the number of electrons is 84

means to be stable what is followed

is crn whose number of electrons or

atomic number is 86 means 84 minus 86

or = min 2 then the charge d is 2min

eh then the resulting compound

is

Hi We just have to multiply yes means

a2dp three so a2dc

hi okay That's it for

this video, I hope you understand

my explanation, thank you,

wassalamualaikum warahmatullahi