A Level H2 Chemistry 2012 Paper 1 Answers Instant

\[Sodium has a lower ionization energy than magnesium because its outermost electron is in a 3s orbital, which is farther away from the nucleus and experiences a lower effective nuclear charge compared to the 3s electrons in magnesium.\]

\[CO2 is a non-polar molecule because its linear geometry and symmetrical arrangement of polar C=O bonds result in a net dipole moment of zero.\]

(b) Explain why CO2 is a non-polar molecule. a level h2 chemistry 2012 paper 1 answers

(b) Explain why the reaction between zinc and dilute nitric acid produces hydrogen gas.

(a) Describe the bonding in CO2.

(b) Explain why the ionization energy of sodium is lower than that of magnesium.

(a) Write an equation for the reaction between zinc and dilute nitric acid. \[Sodium has a lower ionization energy than magnesium

\[Zn + 2HNO3 → Zn(NO3)2 + H2\]