the d block

Question 1

what is a d-block element

Answer 1

any element that has its highest energy electron in a d-subshell

Question 2

what is a transition element

Answer 2

any element that can form at least one ion with an incomplete d-subshell

Question 3

write the electron configuration of titanium

Answer 3

1s2 2s2 2p6 3s2 3p6 4s2 3p2

Question 4

write the electron configuration of chromium

Answer 4

1s2 2s2 2p6 3s2 3p6 4s1 3d5

Question 5

write the electron configuration of copper

Answer 5

1s2 2s2 2p6 3s2 3p6 4s1 3d10

Question 6

write the electron configuration of a Fe2+ ion

Answer 6

1s2 2s2 2p6 3s2 3p6 3d6

Question 7

why is scandium not a transition element

Answer 7

only forms 3+ ions

1s2 2s2 2p6 3s2 3p6 3d1 4s2 (Sc)
1s2 2s2 2p6 3s2 3p6 (Sc3+)

doesnt form an ion with an incomplete d-subshell as d-subshell is empty

Question 8

why is zinc not a transition element

Answer 8

only forms 2+ ions

1s2 2s2 2p6 3s2 3p6 4s2 3d10 (Zn)

1s2 2s2 2p6 3s2 3p6 3d10 (Zn2+)

doesnt form an ion with an incomplete d-subshell as d-subshell is full