Providing reasoning, what is the trend in the atomic radius of row 3 elements across the periodic table?

Decreasing atomic radius across the periodic table.

- greater number of protons in the nucleus resulting in a greater nuclear charge.

- little/no change in shielding.

- electrons added to same shell.

- overall the atomic radius becomes smaller.

JS

Related Chemistry A Level answers

All answers ▸

Explain why transition metal compounds are often coloured in solution.


An amino acid contains 52.2% carbon, 9.3% hydrogen, 8.7% nitrogen and 29.8% oxygen by mass and has a relative molecular mass of 161 g/mol. What is its molecular formula? What functional groups must it have?


Explain the 3 pieces of evidence that disprove Kekule's model of benzene.


Describe how you would differentiate a sample of butanal and butan-2-one.