Question

The last electron of an atom was filled in the 3d subshell, and it has 7 electrons. Answer the questions.
a) Complete subshell configuration. b) Atomic number. c) Block. d) Period. e) Group number. f) Write any two characteristics of the block which the atom belongs.​

Answer 1

Answer:

Division of elements into s, p, d and f block | Chemistry, Class 11 ... Characteristics of s-block elements 1)They are soft metals with low melting and boiling points. 2)They have low ionisation enthalpies and are highly electropositive. 3)They lose the valence electrons readily to form +1 and +2 ions. 4)They are very reactive metals .