1) Which orbital corresponds with n = 3, l = 1, ml = 2? 2) An alkaline earth met

Question

1) Which orbital corresponds with n = 3, l = 1, ml = 2?

2) An alkaline earth metal forms a compound with chlorine with the formula __________.

a) MCl

b) MCl2

c) M2Cl

d) MCl3

3) Of the following atoms (Rb, Na, Si, F, He), which has the largest first ionization energy?

4) Which of the following are isoelectronic with Kr?

a) Cl-

b) Br-

c) Se3-

d) K+

e) Rb+

f) Sr2+

g) Ca2+

h) As3-

5) Of the following atoms (Rb, Na, Si, F, He), which has the largest radius?

6) Write the full ground-state electron configuration for germanium?

7) Give the short-hand electron configuration for Barium:

8) Write the short-hand electron configuration for Germanium:

9) Of the following atoms (Rb, Na, Si, F, He), which has the smallest electron affinity?

10) In which set of elements would all members be expected to have very similar chemical properties?

a) Mg, Ca, Ba

b) K, Ca, Ga

c) C, S, Sn

d) O, F, Ne

Explanation / Answer

1) n = 3, l = 1, ml = 2 it does not correspond to any orbital because n=3 and l=1 means it has to be in 3p

but ml value lhas to be either of -1 . 0 .+1

2) b MCl2

3) He because it is inert and highly stable to loose an electron

4) Br- Rb+ , Sr2+ , As3-

5)Rb because of high atomic number

6) ) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 for Ge

7)[Xe] 6s2

8)[Ar]4s2 3d10 4p2

9)helium

10)a beacuse all are in same group

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