Question

Is it necessary that each try block must be followed by a finally block

Answer 1

Answer:

Answer:

n

=

4

d

-block

Group

9

or equivalently group

VIII (B)

Explanation:

The symbol

[

A

r

]

in the condensed electron configuration of this element resembles the electron configuration of a ground-state argon

A

r

atom. It represents all inner shell electrons of this atom. (see this problem for details about condensed electron configurations.)

On the top of that, a ground-state atom of this element would contain valence electrons

3

d

7

4

s

2

. It would lie in the period right underneath the one containing argon. Argon is the last element of the third period. As a result, this element is in the fourth period of the periodic table. (And hence

n

=

4

)

The block on the periodic table an element belongs to is dependent on the type of the occupied electron orbital of highest potential energy.