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The softness of group IA metals increase...

The softness of group `IA` metals increase down the group with increasing atomic number.

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The correct Answer is:
T

True. The softness of group `IA` metals (alkali metals) increases down the group with increasing atomic number. This is a true statement.
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Explain the following: a. Despite the fact that Li^(o+) has the smallest size among alkali metals, it moves through a solution less rapidly than the others. b. LiF has the lowest solubility among group 1 metal haldes. c. The softness of alkali metals increases with the increases in atomic number.

Property of the alkaline earth metals that increases down the group with their atomic number is

Knowledge Check

  • Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture: A)In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group B)The reactivity decreases in the alkali metals but increases in the halogens with increases in atomic number down the group. C)In both the alkali metals and the halogen the chemical reactivity decreases with increases in atomic number down the group D)Chemical reactivity increases with increases in atomic number down the group in both the alkali metals and halogens.

    A
    Least ionisation enthalpy on the left and highest negative electron gain enthalpy on the right.
    B
    Non-merallic character on the left and metallic character on the right.
    C
    High atomic radii on the left and small atomic radii on the right.
    D
    Highest electronegativity on the left and least electronegativity on the right.
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