16th Group

Question 1

What elements are there in 16th group?

Answer 1

O, S, Se, Te, Po

Question 2

Most copper minerals contains which elements?

Answer 2

O, S

Question 3

Most abundant element on earth crust?

Answer 3

O

Question 4

O forms about what % of mass in earth crust and by vol.

Answer 4

46.6% 20.946%

Question 5

Abundance value of S

Answer 5

0.03-0.1%

Question 6

Combined S exists as

Answer 6

Sulphates- gypsum, epsom, baryte
Sulphides-galena, zinc blende, cu pyrites

Question 7

Atomic no, cov rad, ionic rad, Atomic mass, density order, Metallic character

Answer 7

⬆️

Question 8

IE, EN,
HEH angle and reactivity and BDE (Po is not considered)

Answer 8

⬇️

Question 9

EGE

Answer 9

S>Se>Te>Po>O

Question 10

MP, BP

Answer 10

Te>Po>Se>S>O

Question 11

O,S are

Answer 11

NM

Question 12

Se,Te

Answer 12

Metalliods

Question 13

Po

Answer 13

Metals

Question 14

Which elements exhibit allotropy?

Answer 14

All

Question 15

O.S

Answer 15

-2,+4,+6

Question 16

Why do -2 O. S ⬇️ down the group

Answer 16

Metallic nature⬆️

Question 17

Why do +4, +6 O. S ⬆️

Answer 17

IPE

Question 18

Oxygen shows -2 O. S almost all the time. Which atom doesn’t show -2 but shows -2

Answer 18

OF2

Question 19

S, Se, Te shows what O. S when reacted with O

Answer 19

+4

Question 20

Which elements show +6 O. S when reacted fluorine

Answer 20

S, Se, Te

Question 21

Peroxide O. S

Answer 21

-1

Question 22

Superoxide O. S

Answer 22

-1/2

Question 23

oxide O. S

Answer 23

-2

Question 24

Strong H-Bond is present in H20 but not H2S. Why?

Answer 24

Difference in atomic radius

Question 25

When reacted with water, what prop ⬇️

Answer 25

BE, TS, BA

Question 26

Which prop ⬆️ down the group?

Answer 26

Acidic nature, Red and ox nature, Bond length

Question 27

MP and BP order

Answer 27

H2S

Question 28

Catenation order

Answer 28

S>Se>Te>O