What are the different types of JC Chemistry tuition classes available at your centre?

We have 3 modes of learning for students to choose from: weekly physical classes at Bishan; weekly online lessons via Zoom; and on-demand video lessons.

Are you the only Chemistry tutor conducting the classes or do you engage other tutors to do that?

Please be rest assured that I conduct all my classes personally and I do not engage other tutors to teach at my centre.

How well do your students perform after attending your H2 Chemistry tuition classes?

Most of my students showed improvements by at least 3 grades and more than 80% have attained distinction for A Levels. The earlier the students join my classes, the more confident I am in improving their grades.

What is your class size at Bishan?

Usually the class size is around 10 to 12 students. Max class size is 16 pax.

Is there makeup lesson if I miss a class?

Yes makeup lesson is available in the same week subject to availability. If makeup class is not possible, the student can view the recorded video lessons at Google Classroom.

Do you have trial lesson available? How much is it?

Yes we do. Fees for trial lesson are for Bishan class and for Zoom online class.

Does your centre offer O Level chemistry tuition? Do you teach IB / IP chemistry tuition? How about H1 Chemistry?

Chemistry Guru specialises in H2 Chemistry for JC1 and JC2 or IP Year 5 and IP Year 6 students only. Find out all the information about A Level H2 Chemistry and the detailed comparison between H1 and H2 Chemistry. We do not conduct lessons for H1 Chemistry, O Level Chemistry, IB Chemistry or IP Chemistry at IP Year 3 and IP Year 4.

2019 A Level H2 Chemistry Paper 1 Question 26 - Deduce Electronic Configuration of Mo(IV) Ion

Here's 2019 A Level H2 Chemistry Paper 1 Question 26 on transition elements.

2019 p1 q26 qn

We need to deduce the electronic configuration of molybdenum (IV) ion, given its electronic configuration is similar to those of first row of transition elements and ions.

So the first thing to do is to look up the Periodic Table and find the first row transition element that is directly above molybdenum, which is chromium.

2019 p1 q26 mo and cr

We can figure out the electronic configuration of Cr⁴⁺ which is [Ar] 3d² 4s⁰.

2019 p1 q26 electronic config cr

Students might also be interested in knowing how to write out electronic configuration for the first 30 elements.

Therefore the electronic configuration for Mo⁴⁺ will be the same as Cr⁴⁺ but the principal quantum number increases by 1 since it is in the next Period, ie [Kr] 4d² 5s⁰.

2019 p1 q26 electronic config mo