Explanation

Glycine is the simplest and neutral amino acid, with no extra acidic or basic side chains.

It has a hydrogen atom as its side group (R group), making it electrically neutral at physiological pH.

Explanation

• Group IIIA (or group 13) elements, such as boron (B), aluminum (Al), and gallium (Ga), lose three electrons to form ions with a charge of +3.
• This means that they typically form compounds by losing three electrons, resulting in a valency of +3.

Explanation

Glass, iron, plastic, and paper are typically considered non-recyclable domestic waste;

They are generally accepted for recycling in most communities

Explanation

The bond formed between water molecules (H2O) is a hydrogen bond.

The bond within the water molecule itself is a covalent bond

Explanation

 XeF2 has two fluorine atoms bonded to a central xenon atom, with the lone pairs on the xenon arranged in an equatorial plane.

This results in a linear structure where the fluorine atoms are directly opposite each other along a straight line. 

Explanation

Acetic acid (CH3COOH) has the highest boiling point among the given options due to its strong capacity for hydrogen bonding.

Explanation

The diameter of an atom is in the order of 0.2 nanometers (nm), or 200 picometers (pm), which is equivalent to 2 x 10^-10 meters.

Explanation

Aeroplanes fly in the troposphere, which is the lowest layer of the Earth's atmosphere, extending up to about 12 km (7.5 miles) above the Earth's surface.

The troposphere is where weather occurs, and it's the layer where aircraft operate, typically cruising at altitudes between 30,000 to 40,000 feet (9,100 to 12,200 meters).

Explanation

• Solubility is typically expressed in grams of solute per 100 grams of solvent, denoted as g/100g or g/100mL.
• This unit is called the percentage concentration or percentage composition.

Explanation

• An alloy of Cu - Sn is called Bell metal.
• Bell metal is a specific type of bronze with a higher tin content, commonly used for making bells.