Periodic classification questions | form two Chemistry

Study the following part of the periodic table and then answer the questions that follow. Note: The letters used are not scientific symbols for the elements concerned.

(a) Identify and write down the electronic configuration for the elements K, N, P and L.
(b) What type of bond will exist in a compound formed when Q combines with L? Write the chemical formula for the compound formed and list two chemical properties for the compound formed.

Study the portion of the periodic table given in the following table and answer the questions that follow:

1. Explain how ionisation energy of elements vary from Be to Mg and from B to O.
2. Name the types of bond formed when S combine with O. Give two properties of compounds of  such a bond.

Study the information in Table 1 and answer the questions that follow. (The letters are not the actual symbols of the elements).

Select the elements which belong to the same
(i) group
(ii) period.

An element in the periodic table with atomic number 18 belongs to which of the following?
A Group I and period I.
B Group O and period III.
C Group III and period III.
D Group V and period IV.
E Group VII and period IV

Which of the following electronic configurations are of metals?
A. 2:8:1 and 2:5
B. 2:8:2 and 2:6
C. 2:8:3 and 2:8:8:1
D. 2:8:6 and 2:8:8:7

Elements K, L, M and N have atomic numbers 6, 8, 9 and 20 respectively. Classify each element into its respective period and group.

Give one example in each of the following:
(i) Alkali earth metals.
(ii) Noble gases.
(iii) Transition elements.

Which of the following sets of elements is arranged in order of increasing electronegativity?

1. Chlorine, fluorine, nitrogen, oxygen, carbon
2. Fluorine, chlorine, oxygen, nitrogen, carbon
3. Carbon, nitrogen, oxygen, chlorine, fluorine
4. Nitrogen, oxygen, carbon, fluorine, chlorine
5. Fluorine, nitrogen, oxygen, chlorine, carbon

Which of the following is the electronic configuration of an element Y found in period 3 and group II of the periodic table?

1. 2:8
2. 2:8:2
3. 2:6
4. 2:8:8:2
5. 2:8:4