p-Block elkements(Gr 16,17,18) Reason based question and answer

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SN	PROPERTY/QUESTION	REASON
1	Sulphur has greater catenation than oxygen	S-S bond is stronger bond than O-O
2	Supersonic jet planes are responsible for ozone depletion	Emission of NO. NO+O3=NO2+O2
3	SF4 is easily hydrolysed than SF6	SF6 is exceptionally stable to octahedral symmetry.
4	H2O is more polar than H2S	Oxygen is more electronegative.
5	O2 is paramagnetic	Presence of two unpaired electron in antibonding MO
6	Oxygen do not show +4 or +6 O.S	Due to absence of d-orbital in oxygen
7	Ozone acts as oxidizing agent	Due to liberation of nascent oxygen.
8	Sulphur is solid , oxygen is a gas	Pπ- Pπ bonding in oxygen. Sulphur shows catenation
9	SO2 is an air pollutants	SO2+H2O=H2SO4 Which is corrosive and poisonous.
10	In  contact process for the preparation of H2SO4, SO3 is absorbed in H2SO4.	SO3 forms acid fog when absorbed in H2O.
11	Ka2 is less than Ka1 for H2SO4 in H2O	HSO4- has less tendency to donate proton as compared to H2SO4
12	Oxygen forms hydrogen bond but chlorine does not	Size of oxygen is small in comparison to chlorine
13	HClO4 is stronger acid than HClO3	Higher oxidation state of non metal, highernon metallic character, more is acidic strength.
14	Halogens are strong oxidizing agent	Halogens readily accepts electron
15	ClF3 has T- shaped structure	Sp3d hybridization
16	Bond dissociation energy of F2 is less than Cl2	Due to small size of F, interelectronic repulsion is larger than Cl
17	Covalent fluoride is more inert than other covalent halide	Stronger bond with fluorine.
18	ClF3 exist but FCl3 does not	Size of fluorine is too small to hold three bulky chlorine
19	ICl is more reactive than I2	I-Cl bond is weaker bond than I2
20	Halogens are coloured	Absorption  of light in visible range
21	Structure of xenon fluoride can not be explained by VBT	Xenon has fulfilled orbital.
21	Noble gases have comparatively large atomic size.	Vander wall radii is larger than metallic and covalent radii.
22	Noble gas form compounds with oxygen and fluorine	oxygen and fluorine are more electronegative
23	Helium is used in diving apparatus	He is less soluble in blood