Classification of Elements and Periodicity in Properties Test

Result

Classification of Elements and Periodicity in Properties Test - 17

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following pairs is isolelectronic?

A
Ar and Cl

B
Na⁺ and Ne

C
Na⁺ and Mg

D
Mg and Ne
Question 2
4 / -1

The common features among the species CN^‒, CO and NO⁺ are

A
Bond order three and isoelectronic

B
Bond order three and weak field ligands

C
Bonds order two and π - acceptors

D
Isoelectronic and weak field ligands
Question 3
4 / -1

The set representing the correct order of first ionization potential is

A
K > Na > Li

B
Be > Mg > Ca

C
B > C > N

D
Ge > Si > C
Question 4
4 / -1

Consider the following statements:
I. The radius of an anion is larger than that of the parent atom
II. The ionization energy generally increases with increasing atomic number in a period.
III. The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct ?

A
I alone

B
II alone

C
I and II

D
II and III
Question 5
4 / -1

The electronic configuration of elements A, B and C are [He]2s¹, [Ne] 3s¹ and [Ar] 4s¹ respectively. Which one of the following order is correct for.IE₁ (in kJ mol^-1) of A, B and C ?

A
A > B > C

B
C > B > A

C
B > C > A

D
C > A > B
Question 6
4 / -1

Which of the following sets of atomic numbers belong to that of alkali metals?

A
1, 12, 30, 4, 62

B
37, 19, 3, 55

C
9, 17, 35, 53

D
12, 20, 56, 88
Question 7
4 / -1

Element with atomic number 56 belongs to which block?

A
s

B
p

C
d

D
f
Question 8
4 / -1

Which of the following order is wrong ?

A

B

C

D
Question 9
4 / -1

Identify the least stable ion amongst the following

A
Li^‒

B
Be^‒

C
B^‒

D
C^‒
Question 10
4 / -1

According to the Periodic law of elements, the variation in properties of elements is related to their

A
Nuclear masses

B
Atomic numbers

C
Nuclear neutron- proton number ratio

D
Atomic masses