Question

In a period -2 ,element X is to right of element Y.Then find which of the elements have a) lower energy b)high IE c) low atomic size d) more mettalic character

Answer 1

Answer:

a) Y

b)X

c)X

d) Y

Explanation:

based on periodic property

1. in periods atomic size decreases from left to right
2. ionization energy increases
3. metallic character decreases

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Answer 2

Answer:

Given that element Y is left of X in period 2. So

a) Y has lower nuclear charge because when we move from left to right in a period nuclear charge increases.

b) X has low atomic size because when we move from left to right in a period atomic number increases which increases nuclear charge, so atomic decreases.

c) X has higher ionisation energy because in a period when we move from left to right the atomic size decreases.

d) X has high electronegativity because in a period the electronegativity values increases due to decrease in atomic size.

e) Y has more metallic character because in a period when we move from left to right metallic character decreases.