Please list all subshells in the fourth shell. Please list the number of orbital

Question

Please list all subshells in the fourth shell. Please list the number of orbitals in each subshell Provide the electron configurations of atsenic (As) (either in spdf, noble gas, or orbital box notation) Arrange Al, B, C, K and Na in order of increasing radii (smallest rightarrow largest). please explain. Please write the electron configuration (either in spdf, noble gas, or orbital box notation) for each of following ions: P^3-, Cl^-, K^Ca^2+ Arrange them in the order of increasing radii (smallest rightarrow largest).

Explanation / Answer

17)

as we go down the group , the reactivity with water increases

so

for IIA elements

the order is Be < Mg < Ca < Ba

so

Barium (Ba) is the most reactive

so

the answer is d) Ba

18)

the electronic configuration of Chromium is [Ar] 3d5 4s1

1)

in fourth shell , the subshells are s , p , d , f

s --> 1 orbital

p ---> 3 orbitals

d ---> 5 orbitals

f ---> 7 orbitals

2)

electronic configuration of arsenic is [Ar] 4s2 3d10 4p3

3)

the order is

K > Na > Al > B > C

b)

it is beacuse

as you across a perios , the effective nuclear charge inceased , so the atom will be smaller

similarly

as you go down the group , atomic radius increases

4)

P3- ---> [Ne]3s2 3p6 = [Ar]

Cl- --> [Ne] 3s2 3p6

K+ --> [Ne] 3s2 3p6

Ca+2 --> [Ne] 3s2 3p6

b)

all the given isoelectronic

so

higher the negative charge , larger the radius

so

the order is

P3- > Cl- > K+ > Ca+2

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---