Question

pls need help

Answer 1

pls answer 21 and the sub question i will fan and medal u and even give a testimonial

Answer 2

@Abmon98 @Miracrown

Answer 3

@hartnn @ikram002p @t

Answer 4

pls help me

Answer 5

@Abmon98 pls help me

Answer 6

@ikram002p @imer pls help me

Answer 7

for i
oxidation states increase cuz the number of electrons which are at the last orbit increase

Answer 8

do u have any guesses yourself?

Answer 9

not really @ikram002p
@hari5719 do you know about octet rule?

Answer 10

for ii
when the electrons number at last orbit more than 4
then the element prephare to gain electrons not to lose them

Answer 11

that all the elements want to have same configuration as that of some noble gases

Answer 12

@hari5719 any idea about this?

Answer 13

no its really confusing

Answer 14

well look

Answer 15

huh , ok continue somy :)
i thought this is math section xD
not good with chem

Answer 16

lets say sodium

Answer 17

ok

Answer 18

it has 1 electron in its last shell
right?

Answer 19

ya

Answer 20

is it easier to get rid of that electron and reach electronic configuration that is same as of noble gases or should Sodium rather gain 7 more electrons to have same configuration as of noble gases?

Answer 21

lose 1 or gain 7 more
which one is easier?

Answer 22

so wats the answer for the subquestions

Answer 23

first do u understand what im saying?

Answer 24

yup quit ok

Answer 25

lose one

Answer 26

alright so thats why oxidation state of first 4 groups is rather losing - because its easier to get same electronic configuration as noble gases

Answer 27

oh

Answer 28

as for elements in group 5 and over

Answer 29

its easier for them to rather gain electrons
than lose
because example Cl
it has 7 electrons
so its easier to gain 1 more electron rather than lose all 7 electrons

Answer 30

or phosphorus
has 5 electrons
its easier to get 3 more rather than lose all 5

Answer 31

so then reason y the oxidation state increase from sodium to silicon is ???

Answer 32

the same right

Answer 33

???????

Answer 34

yes basically say reason for both is same

Answer 35

@Somy so wat is subquestion 2 and 3 answer

Answer 36

its just first 4 groups tend to lose rather than gain
and the rest of the groups tend to gain rather than lose

Answer 37

i told you about 1 and 2

Answer 38

3- try writing yourself first

Answer 39

oh ok and question 3 and 4 pls

Answer 40

ok but i totally dont get 4 @Somy

Answer 41

try writing it and then i'll help

Answer 42

Aluminium Sulphide

Answer 43

you dont know whats alluminium element or whats sulfur?

Answer 44

Al2S3

Answer 45

Al^+ => aluminium
S^2- => sulphide

Answer 46

yup
see you did it right

Answer 47

now do Silicon phosphide

Answer 48

Si -> 4+ oxidation state
P -> 3- oxidation state

Answer 49

so how is the formula going to look like?