Question

of periodic table fill in the blank spaces with appropriate words.
(a) The chemical properties of an element are the periodic function of their
(b) The serial number of an element in a periodic table is also its
(c) The number of electrons in the valence shell of an atom represents its
table.
in the periodic
(d) The number of electron shells around the nucleus of an atom represents its
in periodic
table.
(e)
metals and alkaline
metals are placed in groups IA and (b)
respectively on the left hand side of periodic table.
-
1930
elements are placed on the right hand side of periodic table.
(g) The elements occupying left and right wing vertical columns are called
at lobor
elements.
(h) Noble
are placed in
group in the last
of the periodic table.
(i) The
elements are accommodated in the middle of the periodic table in
series.
6) The first period has
elements and is called
period.
(k) The second and the third periods have
tractat
elements and are called
GOT
(1) The fourth and fifth periods have
elements and are called
periods.
(m) The sixth period has
elements and is called
period.
(n) The seventh period is also
period, but is
(0)
tanthonum ar
are the elements from atomic number 57 to
and are placed
periodic table.
SOLO
(p) Actinides are elements from atomic number
to
and are radioactive.
periods.
o bilo
the​

Answer 1

Answer:

humThe sixth period has

elements and is called

period.

(n) The seventh period is also

period, but is

(0)

tanthonum ar

are the elements from atomic number 57 to

and are placed

periodic table.

SOLO

(p) Actinides are elements from atomic number

to

and are radioactive.

periods.

o bilo