Classification of Elements and Periodicity in Properties Test

Result

Classification of Elements and Periodicity in Properties Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

Which systematic diagram represent the correct sequence of the physical properties?
No. Property
1. Electronegativity
2. Metallic property
3. Atomic radius

A

B

C

D
Question 2
1 / -0

Electron affinity of the elements or ions shown correctly?

A
$$S > {O^ - }$$

B
$${N^ - } > {P^ - }$$

C
$${O^ - } > {S^ - }$$

D
$${N^ - } > P$$

Solution
Question 3
1 / -0

Which of the following has the highest electron gain affinity?

A
Sulphur

B
Chlorine

C
Fluorine

D
Oxygen

Solution
Question 4
1 / -0

The total number of elements of the fifth period having one or more $$5d$$ electrons:-

A
$$10$$

B
$$16$$

C
$$30$$

D
$$zero$$
Question 5
1 / -0

Two moles of $$N _ { 2 }$$ and two moles of $$\mathrm { H } _ { 2 }$$ are taken in a closed vessel of 5 litres capacity and suitable conditions are provided for the reaction. When the equilibrium is reached, it is found that a half mole of $$N _ { 2 }$$is used up. The equilibrium concentration of $$N H _ { 3 }$$ is:

A
0.3 M

B
0.4 M

C
0.2 M

D
0.1 M

Solution
Question 6
1 / -0

When the first electron gain enthalpy $$(\Delta _{eg}H)$$ of oxygen is -141 kJ/mol, its second electron gain enthalpy is:

A
negative, but less negative then the first

B
a more negative value than the first

C
almost the same as that of the first

D
a positive value

Solution
Question 7
1 / -0

If X(OH) > Y(OH) (acidic strength)
'X' and 'Y' both belong to same group then select the CORRECT statement :-

A
Electron gain enthalpy of 'Y' must be greater than 'X'

B
Atomic size of 'X' must be greater than 'Y'

C
O-H bond will be easily broken in case of hydroxide of 'X'

D
O-H bond will be easily broken in case of hydroxide of 'Y'

Solution
Question 8
1 / -0

The IUPAC name of the element having atomic number 109 is

A
Unniloctium

B
Unnilquadium

C
Unnilennium

D
Ununseptium

Solution
Question 9
1 / -0

The electronic configuration of an element is $$1{ s }^{ 2 }2{ s }^{ 2 }2{ p }^{ 6 }3{ s }^{ 2 }3{ p }^{ 6 }3{ d }^{ 5 }4{ s }^{ 1 }.$$ This represents its:

A
excited state

B
ground state

C
cationic form

D
none
Question 10
1 / -0

Which of the following factor is the most important in making fluorine the strongest oxidizing agent?

A
Electron affinity

B
Ionization energy

C
Hydration Enthalpy

D
bond dissociation energy