Question

(b) 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.
Group No.
I-IA
2-IIA
13-NIA
14-IVA
15-VA
16-VIA
17.VIIA
18-0
M
enod
2nd period
Ne
3rd period chame Esilism
4h
period 4th period R T
1 u
Answer the following questions.
(i) Identify the most electronegative element.
(ii) Identify the most reactive element of group IA or 1.
(iii) Identify the element from period 3 with least atomic size.
(iv) How many valence electrons are present in Q.
(v) Which element from group 2 would have the least
ionization energy?
(vi) Identify the noble gas of the fourth period.
Yvir In the compound between A and H what type of bond
r is formed and give its molecular formula,
Identify: The element which has the highest ionization
potential.​

Answer 1

Given that,

(i). H does not represent hydrogen.

(ii). Some elements are given in their own symbol and  position in the periodic table.

(iii). Others are shown  with a letter

We need to find the answer of given question

Using given table

(I). The most electronegative element is J.

We know that,

Electronegativity of element increases from down to up in groups, and increases from left side to right side in periods.

(II). The most reactive element of group IA is R.

(III).  The element from period 3 with least atomic size is M.

(IV). The valence electrons are present in Q is  5.

(V). T has least  ionization energy in group 2.

(VI). The noble gas of the fourth period is y.

(VII). The ionic bond between A and H.

The molecular formula is $A_{2}H$

Hence, This is required answer.