KNEC KCSE Chemistry Paper 1 – 2015 – Machakos County Trial

KNEC KCSE Chemistry Paper 1 – 2015 – Machakos County Trial 2015 KCSE Machakos County Trial Chemistry Paper 1 Answer all questions 1. The electron arrangement of ions Q2- and R3+ are as 2, 8, 8, and 2,8respectively. (a) Write the electron arrangement of the elements Q and R (2marks) ____________________________________________________________________________________ ____________________________________________________________________________________ (b) Write the formula of … Read more