CHEMISTRY
TEST (PERIODIC TABLE)
CLASS: X BOARD: ICSE
- Fill in the blanks.
a)
There are ------- groups in periodic table.
b)
Group 2 elements are called ----- metals. .
c)
Group 17 elements are called -------- family.
d)
------- period is the shortest period.
e)
The electronic configuration of Cl is -----.
- Chose from the options
and fill in the blank.
a) Moving across a
___________ (group, period) of the Periodic Table, the elements
show increasing ___________ character. (metallic, non-metallic).
b) The element below sodium
in the same group would be expected to have a ______ (lower/higher)
electro-negativity than sodium and the element above chlorine would be expected
to have a _________ (lower/higher) ionization potential than chlorine.
c) On moving from left to
right in a given period, the number of shells -------- (remains the same/increases/decreases)?
d) On moving down a group,
the number of valence electrons ------------- (remains the
same/increases/decreases)?
e) Moving across a
___________ (group, period) of the Periodic Table, the elements
show increasing ___________ character. (metallic, non-metallic).
f)
The ionization potential------------- (increases,
decreases) on going down a Group.
g) The atomic size of
elements ------------------ on moving from left to right in a period (increases,
decreases)
- With reference to the
variation of properties in the Periodic Table, which of the following is
generally true?
.
a) Electron affinity increases going down a group.
b) Electro negativity increases going down a group.
a) Electron affinity increases going down a group.
b) Electro negativity increases going down a group.
- Define valency?
- How many elements are in the second period?
- Why are elements at
the extreme left and extreme right the most reactive?
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