electrons bonding and structure

Question 1

why are electrons not draw into the atom

Answer 1

they have fixed energies so even though they are attracted to the nucleus they are not drawn into it.

Question 2

what are the 4 sub shells and how many electrons can they hold

Answer 2

s=2
p=6
d=10
f=14

Question 3

why are orbitals?

Answer 3

. a region where an electron is likely to be found
. an orbital can hold unto 2 electrons with opposite spins

Question 4

what is the shape of s and p orbitals

Answer 4

S = spherical
P = elongated dumbbell

Question 5

what is spin

Answer 5

• electrons are negatively charged to when in the same orbital the repel each other
• this gives them a property called spin
• so electrons in the same orbitals have opposite spins to minimise repulsion

Question 6

what is the electronic configuration of Cr

Answer 6

1S2, 2S2 ,2P6, 3S2, 3P6, 3D5, 4S1

Question 7

what is the electronic configuration of Cu

Answer 7

1S2, 2S2, 2P6,

Question 8

how is the periodic table split into 4 blocks

Answer 8

group 1+2 =3 s block
transition metals = d block
groups 3-8 =-5 p block
lanthindies and actinides = f block