3)With reference to group 1 [IA] of the periodic table - fill in the blanks with the correct word:
The elements are ___________
[light/heavy)
(metals/non-metals) since their atomic size is __________
[large/small). The energy binding the atoms is
high/low) and hence the
elements have __________ (high/low) melting points. The melting points of the elements ____________
[increases / decreases) down the subgroup. The electropositive character. -[increases/ decreases
down the subgroup and the elements are strong. ____ [reducing/oxidizing) agents. The element
with electronic configuration 2,8,1 will have __________
- [higher/lower) electronaffinity and _______
[smaller/larger) atomic size than the element with electronic configuration 2,1.
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