All s-block and p-block elements are called ……..elements
a) inert
b) representative
c) very reactive
d) actinides
Transition elements are also called ……… elements.
a) d-block
b) s-block
c) f-block
d) p-block
Explanation:The D-block elements are also known as the transition elements. The IUPAC defines these transition metals as an element whose atom has a particularly filled d subshell or which can give rise to citations with incomplete d subshells. These elements are known as the d block elements.
Lanthanides & actinides are also called ……. elements.
a) d-block
b) s-block
c) f-block
d) p-block
Explanation:Elements whose f orbital getting filled up by electrons are called f block elements. The elements in which the extra electron enters ( n- 2 )f orbitals are called f-block elements. These elements are also called inner transition elements because they form a transition series within the transition elements.
The fifth element of the first transition series is ………
a) Fe
b) Mn
c) Cu
d) Lu
The element of the fourth period that is also in group VB is……….
a) Br
b) V
c) Pa
d) Lu
The first coinage metal is ………….
a) Cu
b) Br
c) Fe
d) Sr
