Question

reasons for increase or decrease in periodic table ​

Answer 1

Answer:

yes

Explanation:

the major reason is the molecular mass

Answer 2

1. Atomic size decrease because nuclear charge increases no. of shells remain same.

2. Moving left to right within a period or upward within a group, the first ionization energy generally increases. As the atomic radius decreases, it becomes harder to remove an electron that is closer to a more positively charged nucleus. Radii increases.

3. Electron affinity generally increases across a period in the periodic table due to increased nuclear charge. Radii increases.

4. Electronegativity generally increases as you move from left to right across a period and decreases because atomic radii increases n nuclear charge decreases.

5. Metallic character decreases because IP increases and atomic radii increases.

Second bit is just the opposite of this one.

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