Alkali metals are easily inflammable when they touch to kerosene.
False
Atomic radii ----- with increasing atomic number down the group.
increase
The position of alkali metals are ---- in the electro chemical series. ( low / high )
high
Li, Na and K are so reactive that they are usually stored under ----- .
kerosene
Alkali metals are easily inflammable when they touch to ----- .
water
Alkali metals are very good ----- agents.
reducing
Sodium is a ---- metal and may be cut easily with a knife.
soft
Alkali metals are the members of ---- in the periodic table.
group IA
The alkali metals --- rapidly in air , forming a layer of oxide.
tarnish
The electronic structure of (He)2s1 is lithium. ( True / False )
True
