Home › NEET UG › Chemistry › Atoms and Molecules › Per NCERT §3.7.3, oxides of elements show what a…
Per NCERT §3.7.3, oxides of elements show what acid–base trend across a period?
AAlways basic
BNo periodic trend
CAlways acidic
DMost BASIC at the extreme left (e.g. Na₂O); AMPHOTERIC in the centre (Al₂O₃); most ACIDIC at the extreme right (Cl₂O₇)
Answer & Solution
Correct answer: D. Most BASIC at the extreme left (e.g. Na₂O); AMPHOTERIC in the centre (Al₂O₃); most ACIDIC at the extreme right (Cl₂O₇)
Per NCERT §3.7.3 + Problem 3.10, Na₂O + H₂O → NaOH (basic); Cl₂O₇ + H₂O → HClO₄ (acidic). Al₂O₃ amphoteric.
Related questions
The property of attracting shared electrons by halogen atoms in a molecule is called:Calculate the mass percentage of sulphur in sulphuric acid, H2SO4. (Atomic masses: H = 1, How many atoms of oxygen are present in 5 moles of CO2? (NA = 6.023 x 10^23)Calculate the gram molecular mass of calcium phosphate, Ca3(PO4)2. (Atomic masses: Ca = 40What volume at STP is occupied by 2.5 mole of CO2 gas? (Molar volume = 22.4 litre)How many molecules of water are present in 54 g of H2O? (Molecular mass of H2O = 18, NA = Calculate the number of molecules present in 11.2 litre of CO2 measured at STP. (NA = 6.02Boron occurs as B-10 (20% abundance) and B-11 (80% abundance). Calculate its average atomi