In general nuclear charge effect decreases down a group with some exceptions and that is why Fluorine is more electronegative than other elements in the group. This is because the extra electron shells provide more shielding. It increases across a period so Fluorine is more electro negative than oxygen.
Question : Which of the following statements is correct?
Question : In a peridic table of elements on moving from left to right across a period ,the atomic radius
Question : The law of diminishing marginal utility states that:
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