Bright Tutorials Bright Tutorials
ICSE Class 10 Chemistry Question 2 of 25

Periodic Table, Periodic Properties and Variations of Properties — Question 7

Back to all questions
7
Question

Question 7

In the table below, H does not represent hydrogen. Some elements are given in their own symbol and position in the periodic table while others are shown with a letter.

1A
1		IIA
2		IIIA
13		IVA
14		VA
15		VIA
16		VIIA
17		O
18
Li D  OJNe
AMgESi HK 
BC FG  L

Answer the following questions.

  1. Identify the most electronegative element.

  2. Identify the most reactive element of group IA or 1.

  3. Identify the element from period 3 with the smallest atomic size.

  4. Identify the element with the highest ionization potential.

  5. How many valence electrons are present in G ?

  6. Which element from group 2 will have the least ionization energy ?

  7. Identify the noble gas of the fourth period.

  8. In the compound between A and H, what type of bond is formed ? Give its molecular formula.

Answer

  1. J is the most electronegative element.

  2. B is the most reactive element of group IA or 1.

  3. K is the element from period 3 with smallest atomic size.

  4. Ne the highest ionization potential.

  5. 5 valence electrons present in G.

  6. C is the element from group 2 which has least ionization energy.

  7. L is the noble gas of the fourth period.

  8. ionic bond is formed between A and H.
    The molecular formula is :
    2A + H ⟶ A2H