WorksheetsGroup 1 and Group 7 elements
Total questions: 12
Worksheet time: 6mins
Group 1 elements only form _______________ion.
-1
+1
-2
+2
Q and R are present in the same group ,having proton number 9,write electronic configuration (a)
Why does the reactivity of group 1 elements increases down the group?
it becomes easier to gain electron
it becomes harder to lose electron
it becomes easier to lose electron
none of these
Which is the least reactive halogen?
Cl
F
I
Br
Halogens are metals?
True
False
Which halogen has the lowest melting point?
F
Br
Cl
I
Halogens are good conductors of heat and electricity?
True
False
Would F displace I in a reaction?
Yes
No
Are Halogens toxic?
Yes
No
How many electrons are in the outer most shell of Halogens?
(a)
In order to become stable do the halogens need to________
Gain an electron
Loss an electron
Gain 2 electrons
Loss 2 electrons
Which Halogen is most reactive?
Br
I
Cl
F
