What is the electronic configuration of argon? 3s2 3p6 d) 3s2 3p5

What is the electronic configuration of lithium? 3s2 3p6 d) 3s2 3p5

A

1s2

B

1s2 2s

C

[Ne

D

Ne

What is the electronic configuration of helium? 3s2 3p6 d) 3s2 3p5

A

1s2

B

1s2 2s

C

[Ne

D

Ne

What is the electronic configuration of chlorine? 3s2 3p6 d) 3s2 3p5

A

1s2

B

1s2 2s

C

[Ne

D

Ne

একটি মৌলের ইলেকট্রন বিন্যাস – 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 মৌলটি কোন গ্রুপের?

A

02

B

04

C

12

D

14

Which of the following statements regarding group 16 elements is not true? 2s22p4 b) The electronic configuration of Sulphur is 3s23p4 c) The atomic radii of the elements of group 16 are larger than those of the corresponding elements of group 15 d) The electronic configuration of Tellurium is 4d105s25p4

A

The electronic configuration of Oxygen is 2s22p4

B

He

C

He

D

He

Which of the following statements are true? Statement 1: Electronic configuration of sodium is 1s22s22p63s1. Statement 2: Electronic configuration of sodium ion is 1s22s22p6.

A

Statement 1 is true but statement 2 is false

B

Statement 2 is true but statement 1 is false

C

Statement 1 and statement 2, both are true

D

Statement 1 and statement 2, both are false

What is the polarizability of an argon atom if the relative permittivity of argon at NTP is 1.000435?

A

1.21 X 10-40 Fm2

B

1.37 X 10-40 Fm2

C

1.43 X 10-40 Fm2

D

1.55 X 10-40 Fm2

Argon in a light bulb is at 90 kPa and heated from 20°C to 60°C with electrical power. Find the total entropy generation per unit mass of argon.

A

0.01 kJ/kg K

B

0.02 kJ/kg K

C

0.03 kJ/kg K

D

0.04 kJ/kg K

In AOD process of stainless steel making, a mixture of argon and oxygen gas in blown through the bottom because the argon gas

A

dissolve in steel to offer better corrosion protection

B

acts as a catalyst for the reaction of carbon and oxygen

C

lowers the partial pressure of CO gas in the bubble and hence helps to increase the decarburisation rate

D

Prevents the oxidation of expensive nickel in the stainless steel

Argon is a commonly used gas to fill incandescent light bulbs because argon is . . . . . . . .

A

lightest

B

reactive

C

abundant

D

inert