NCERT Group vi Exam Questions & Answers 2024/2025
Elements of the vI group also called as - ANSWERSChalcogens ore forming
Most abundant element in the earth - ANSWERSO2
46% by volume
21% as dry air
Half life of Po - ANSWERS14 days
Trend of covalent radius down the group - ANSWERSDow...
NCERT Group vi Exam Questions & Answers 2024/2025
Elements of the vI group also called as - ANSWERSChalcogens ore forming
Most abundant element in the earth - ANSWERSO2
46% by volume
21% as dry air
Half life of Po - ANSWERS14 days
Trend of covalent radius down the group - ANSWERSDown the group, the radius increases
O,S max diff
Te,Po min difference
Ionisation enthalpy and EN trend down he group - ANSWERSDown the group IE and EN decreases
O>S>Se>Te>Po
Trend of electron gain enthalpy down the group - ANSWERSDecreases
O2 has the least EGE S >Se> Te >Po >O
Trend of density down the grouo - ANSWERSDown the group density increase O <S <Se <Te <Po
Trend of melting and boiling points down the group - ANSWERSDown the group generally increases but only into Te
Te highest melting and boiling point Abnormal differences in the boiling points of O and S due to - ANSWERSAtomicity
O2 is diatomic gas while S8 is octatomic liquid
On moving down the group the +4 oxidation state stability increases due to - ANSWERSInert pair effect
Stability, solubility, H bind formation, basic nature down the group of hydrides - ANSWERSDecrease from H2O to H2Te
H2O>H2S>H2Se>H2Te>H2Po
Acidic nature, ka value, reducing nature, bond length of hydrides - ANSWERSIncrease from H2O to H2Te
H2O<H2S<H2Se<H2Te<H2Po
Melting and boiling points of hydrides - ANSWERSIncreases down the group
H2O highest mp and BP due to infer molecular hydrogen bonding
Most volatile hydride - ANSWERSH2S
Delta Hf is negative for - ANSWERSH2O and H2S
Most basic oxide - ANSWERSPoO3
Halide formation - ANSWERSHEXAHALIDES
SF6
Hyb-sp3d2 octahedral
F>Cl>Br>I due to steric factors TETRAHALIDE
SF4
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