Group 18: Noble gases

Question 1

I.E. (Group 18)

Answer 1

maximum in their respective periods

Question 2

atomic radius (Group 18)

Answer 2

maximum in their respective periods

Question 3

electron affinity (Group 18)

Answer 3

0

E.G.E. positive

Question 4

M.P. AND B.P. (Group 18)

Answer 4

very low due to vandervall forces

Question 5

B.P. of He (Group 18)

Answer 5

4.2K

least in the periodic table

Question 6

maximum occurence in the atmosphere (Group 18)

Answer 6

Ar

0.93%

Question 7

which element is used in balloon for meteorological observation (Group 18)

Answer 7

He

Question 8

which element is used in gas cooled nuclear reactors (Group 18)

Answer 8

He

Question 9

which element is used as cryogenic agent for experiment (Group 18)

Answer 9

He

Question 10

which element produce powerful super conducting magnets (Group 18)

Answer 10

He

parts of MRI, NMR, Spectometre

Question 11

which element is added in oxygen cylinder for divers (Group 18)

Answer 11

He

Question 12

which element is used in florescent bulbs (Group 18)

Answer 12

Ne

Question 13

bulbs of which element is used in botanical garden and green house (Group 18)

Answer 13

Ne

Question 14

which gas is filled in electrical bulbs

Answer 14

Ar

Question 15

which element provides inert atmosphere in metallurgical processes (Group 18)

Answer 15

Ar

Question 16

elements that are used in bulbs (Group 18)

Answer 16

Ne
Ar
Xe
Kr

Question 17

XeF2 +NO = (Group 18)

Answer 17

Xe + NOF

Question 18

which element is used in catherate compounds (Group 18)

Answer 18

Ar
Kr
Xe
because of their large size

Question 19

structure of XeF2 (Group 18)

Answer 19

sp3d linear

Question 20

structure of XeF4 (Group 18)

Answer 20

sp3d2 square planer

Question 21

structure of XeF6 (Group 18)

Answer 21

sp3d3 distorted octahedral

Question 22

structure of XeO3 (Group 18)

Answer 22

sp3 pyramidal

Question 23

structure of XeO2F2 (Group 18)

Answer 23

see-saw

Question 24

structure of XeOF4 (Group 18)

Answer 24

square pyramidal

Question 25

alpha particle (Group 18)

Answer 25

He2+

nucleus of He

Question 26

first known compound of noble gas is (Group 18)

Answer 26

Xe[PtF6]

Neil Bartelet

Question 27

Noble gases mainly form elements with (Group 18)

Answer 27

higly electronegative element

F and O

Question 28

powerful flourinating agents are (Group 18)

Answer 28

XeF2

XeF4

Question 29

____ compound can donate as well as gain F- (Group 18)

Answer 29

XeF6

Question 30

XeF6 + H2O = (Group 18)

Answer 30

XeOF4 + 2HF

Question 31

XeOF4 + H2O = (Group 18)

Answer 31

XeO2F2 + 2HF

Question 32

XeO2F2 + H2O = (Group 18)

Answer 32

2HF + XeO3 (explosive solid)

Question 33

XeF4 + H2O = (Group 18)

Answer 33

Xe + XeO3 + HF

Question 34

XeF2 + H2O = (Group 18)

Answer 34

Xe + HF + O2

Question 35

xenon flourides are ______ in nature (Group 18)

Answer 35

crystalline solids

sublimes at 298K