1K1_A&M_Suleiman the magnificent by Matthew Wong

Groups

matthew_wong121 — 2019-07-30 00:42:52 UTC

A column of elements is a group. All elements in a group has the same amount of valence electrons.
There are 8 groups in total & are expressed with Roman numerals

Period

matthew_wong121 — 2019-07-30 00:44:32 UTC

A period is a row of elements. All elements in a period has the same number of shells.
there are 7 periods & are expressed with Arabic numerals.

Dot & cross diagram

matthew_wong121 — 2019-07-31 01:32:57 UTC

You draw the symbol in the centre & draw a small circle around it the circle is the 1st shell. You then draw shells as circles & draw electrons as crosses

mr wen say

Jav2209 — 2019-07-31 01:48:17 UTC

electrons has 19 electrons .one easy way to check is to look at period. one valance electrons two valance sodium is one valance 3 shells and oxygen is grp 6 shell 2. periodic table song . great

Chlorine has big shells . Potassium has 19 electrons . 4 shells.

Jav2209 — 2019-08-01 00:21:26 UTC

We can draw it ourselves

2019-08-01 00:22:13 UTC

Mr wen says draw stuff on notes

lokyang — 2019-08-01 00:24:33 UTC

lokyang — 2019-08-01 00:25:56 UTC

Jav2209 — 2019-08-01 00:27:19 UTC

Calcium has 20 electrons

lokyang — 2019-08-01 00:28:20 UTC

The proton number is usually the same with the amount of electrons

lokyang — 2019-08-01 00:30:16 UTC

lokyang — 2019-08-01 00:33:11 UTC

Atoms can lose or gain electrons

lokyang — 2019-08-01 00:33:31 UTC

Normally atoms are nuetral

lokyang — 2019-08-01 00:33:51 UTC

Neutral means that no net charge

lokyang — 2019-08-01 00:34:20 UTC

No of protons is equal to no. Of electrons

Jav2209 — 2019-08-01 00:34:20 UTC

Number of protons equals to number of electrons

Jav2209 — 2019-08-01 00:34:50 UTC

Atoms charge when they gain or lose electrons

lokyang — 2019-08-01 00:35:41 UTC

Da photo

2019-08-01 00:36:25 UTC

Atoms can lose or gain electrons

lokyang — 2019-08-01 00:39:14 UTC

Lithium has 3 atoms

lokyang — 2019-08-01 00:39:27 UTC

There is a concept called stability

lokyang — 2019-08-01 00:39:42 UTC

Atoms will try to have full shells

lokyang — 2019-08-01 00:40:21 UTC

Lithium can lose that electron or gain 7 electrons

lokyang — 2019-08-01 00:42:18 UTC

Jav2209 — 2019-08-01 00:42:49 UTC

Atoms will try to have full shells depends on number of valence electrons

lokyang — 2019-08-01 00:42:51 UTC

Depends on the no of valence electrons

lokyang — 2019-08-01 00:44:25 UTC

lokyang — 2019-08-01 00:50:44 UTC

Ions

matthew_wong121 — 2019-08-01 00:52:50 UTC

When atoms gain electrons, you must put a bracket and write ‘x+’ where ‘x’ is the amount of electrons gained to specify.

lokyang — 2019-08-01 00:52:54 UTC

If atom have <4 valence electrons it will tend toward losing the electrons

Jav2209 — 2019-08-01 00:53:10 UTC

Yes

lokyang — 2019-08-01 00:53:22 UTC

If having more than 4 tend towards gaining electrons

lokyang — 2019-08-01 00:55:17 UTC

lokyang — 2019-08-01 00:55:37 UTC

Before group 4 is cation

lokyang — 2019-08-01 00:55:52 UTC

After group 4 I’d an anion

lokyang — 2019-08-05 01:16:46 UTC

by right : no.of proton is equal to no. of electrons

but ..

lokyang — 2019-08-05 01:17:33 UTC

our atoms wants to be more stable

so ...

lokyang — 2019-08-05 01:18:00 UTC

the atoms will lose/gain electrons to become ions

and ..

lokyang — 2019-08-05 01:18:54 UTC

they become compounds

ions - atoms have more/less electrons than protons

lokyang — 2019-08-05 01:19:20 UTC

ions form compounds

lokyang — 2019-08-05 01:20:11 UTC

eg. if sodium wants to give away an electron and chlorine wants an electron, they exchange and then they form a compound

lokyang — 2019-08-05 01:20:25 UTC

cation is positive and anion is negative

lokyang — 2019-08-05 01:21:58 UTC

this is because before group 4, it is easier to lose an electron than gain one

lokyang — 2019-08-05 01:22:33 UTC

while after group 4 , it is easier to gain an electron than lose one

lokyang — 2019-08-05 01:24:27 UTC

Let's play a game. The rules are on the thingy at the bottom

matthew_wong121 — 2019-08-05 01:42:53 UTC

cations

matthew_wong121 — 2019-08-05 01:43:26 UTC

atom which lost electrons will have a negative charge. Thus becoming a cation.

in group 4 , hey form a covalent bond

lokyang — 2019-08-05 01:58:02 UTC

noble gas do not form ions

lokyang — 2019-08-05 01:58:33 UTC

mr wen says

lokyang — 2019-08-07 00:15:04 UTC

if atoms have full valence shell, they are stable

mr wen also says

lokyang — 2019-08-07 00:15:46 UTC

If atoms do not have full valence shell, they are unstable

atoms will try to have a full valence shell

lokyang — 2019-08-07 00:16:29 UTC

so

lokyang — 2019-08-07 00:16:46 UTC

so

lokyang — 2019-08-07 00:16:46 UTC

they either gain or lose electrons

group

lokyang — 2019-08-07 00:17:18 UTC

for group 1,2,3

lokyang — 2019-08-07 00:17:19 UTC

lose elctrons and minus minus charges

so they turn into cations {positive{

lokyang — 2019-08-07 00:18:29 UTC

while for group 5,6,7

lokyang — 2019-08-07 00:19:05 UTC

they gain electrons

and

lokyang — 2019-08-07 00:20:06 UTC

plus negative charge

so they are anions [negative]

lokyang — 2019-08-07 00:20:27 UTC

anions

lokyang — 2019-08-07 00:22:29 UTC

atoms which gained electrons will have a positive charge. Thus becoming an anion

mr wen says ...

lokyang — 2019-08-07 00:23:00 UTC

noble gases are inert and do not react with anything

the other atoms ...

lokyang — 2019-08-07 00:25:54 UTC

will form compounds

and yes inertia is a

lokyang — 2019-08-07 00:26:22 UTC

Noble Gases

matthew_wong121 — 2019-08-07 00:27:33 UTC

They react to nothing. Since they are inert, ( root word inertia ) they will neither gain, or lose electrons.

lets get started javier

lokyang — 2019-08-13 12:36:43 UTC

Jav2209 — 2019-09-23 01:20:43 UTC

Ppppppp

lokyang — 2019-09-25 01:25:45 UTC

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ma

lokyang — 2019-09-25 01:26:02 UTC

lokyang — 2019-09-25 01:26:41 UTC

may 2019