Which of the following statement is false for alkali metals? (a) Alkali metals do not occur free...

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Alkali
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Alkali (2022)
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Which of the following statement is false for alkali metals?
(a) Alkali metals do not occur free in nature.
(b) Alkali metal salts impart colour to the flame.
(c) The softness of alkali metals decreases down the group with increasing atomic number.
(d) Alkali metal tarnish in dry air.
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