Question

Complete the following:

#1: Number of sublevels in n=3?

#2: Number of orbitals in the 2p sublevel?

#3: Maximum number of electrons in 3d sublevel?

#4: Maximum number of electrons in a 3p orbital?

#5: Group number of carbon?

#6: Sublevel being filled by element with atomic number 47?

#7: Sublevel that begins to fill after 4s^2 ?

#8: Number of valence electrons in As?

Give the symbol of the element described by each of the following:

#1: First element that fills 3s sublevel?

#2: Period 4 element in the same group as F?

#3: Element with 3d^6 ?

#4: Element with a half-filled 5p level?

#5: First element with five 3p electrons?

#6: First element that completes n=3?

#7: Period 6 element in the same group as Mg?

Answer 1

1)5 sublevels (1s,2s,2p,3s,3p,3d)

2)3 orbitals (2p_x,2p_y,2p_z)

3) 10 electrons (as 3d orbital contains 5 orbitals and each can accomodate 2 electron)

4) 2 electrons (as each orbital can accomodate 2 electrons)

5)Group 14 (according to IUPAC notation)

6)4d

7)3d

8)5 valance electrons

1)Na

2)Br

3)Fe

4)Sb

5) Cl

7)Ba