MEDIUM
11th CBSE
IMPORTANT
Earn 100

 How would you react to the statement that the electronegativity of N on Pauling scale is 3.0 in all the nitrogen compounds?

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM
11th CBSE
IMPORTANT

Describe the theory associated with the radius of an atom as it
(a) gains an electron
(b) loses an electron

MEDIUM
11th CBSE
IMPORTANT

Would you expect the first ionization enthalpies for two isotopes of the same element to be the same or different? Justify your answer.

MEDIUM
11th CBSE
IMPORTANT
What are the major differences between metals and non‐metals?
MEDIUM
11th CBSE
IMPORTANT

Use the periodic table to answer the following questions.

(a) Identify an element with five electrons in the outer subshell.

(b) Identify an element that would tend to lose two electrons.

(c) Identify an element that would tend to gain two electrons.

(d) Identify the group having metal, non‐metal, liquid as well as gas at the room temperature.

MEDIUM
11th CBSE
IMPORTANT

The increasing order of reactivity among group 1 elements is  Li<Na<K<Rb<Cs  whereas that among group 17 elements is F>Cl>Br>I. Explain.

EASY
11th CBSE
IMPORTANT

 Write the general outer electronic configuration of s, p, d and fblock elements.

MEDIUM
11th CBSE
IMPORTANT
Assign the position of the element having outer electronic configuration ns2np4 for n=3.
MEDIUM
11th CBSE
IMPORTANT
Assign the position of the element having outer electronic configuration n-1d2ns2  for n=4.