Q: "2. chemically analogous elements have atomic weights, either in close agreement (pt, ir, os), or increasing by equal amounts (k, rb, cs).
A: "2. Chemically analogous elements have atomic weights, either in close agreement (Pt, Ir, Os), or increasing by equal amounts (K, Rb, Cs).

Q: finally, you can now discover everything you need to know about your hxx file... instantly!
A: Finally, you can now discover everything you need to know about your HXX file... instantly!

Q: led stage light > led fluoresent lamp > product-list
A: LED stage light > led fluoresent lamp > Product-List

Q: room facilities: air conditioning, alarm clock, bath, bathroom, carpeted, clothes rack, free toiletries, hairdryer, hardwood/parquet floors, iron, microwave, refrigerator, tv, tile/marble floor, toilet
A:
Room facilities: Air conditioning, Alarm clock, Bath, Bathroom, Carpeted, Clothes rack, Free toiletries, Hairdryer, Hardwood/Parquet floors, Iron, Microwave, Refrigerator, TV, Tile/Marble floor, Toilet