Explanation

 Carbon monoxide (CO) and hydrogen gas (H₂) are formed during the water gas reaction.  

- This reaction involves steam (water vapor) reacting with hot carbon (usually coke or coal):  

  C + H₂O → CO + H₂ 

Explanation

Sulfuric acid (H₂SO₄) is called the "King of Chemicals" or "King of Compounds" due to its wide use in industries like fertilizers, batteries, and detergents.

It plays a key role in chemical manufacturing.

It is often used to measure a country's industrial strength.

Explanation

According to the periodic trends, Nitrogen (N) has the largest ionization energy among the given atoms: N, P, As, and Sb. 

 Ionization energy generally increases from left to right across a period on the periodic table.

Since Nitrogen is to the left of Phosphorus, Arsenic, and Antimony, it will have the highest ionization energy.

Additionally, within a group, ionization energy decreases down the column. 

Explanation

Acceleration is the rate of change of velocity.

It describes how quickly an object's velocity changes over time, encompassing both changes in speed and direction. 

Explanation

Melting is the process where a solid turns into a liquid by absorbing heat.

It occurs at a specific temperature called the melting point.

Explanation

Explanation

Magnesium (Mg) electronic distribution = 2, 8, 2

The number of shells = 3 (so Period = 3)

The number of electrons in the outermost shell = 2 (so Group = 2)

Explanation

- Total known elements: 118

- Naturally occurring: 94

- Synthetic (lab-made): 24

These elements were confirmed and named by the International Union of Pure and Applied Chemistry (IUPAC) between 2012 and 2016.

Explanation

- 1 mole of any substance = 6.022 × 10²³ molecules (Avogadro’s number)  

- So, 2 moles of H₂O = 2 × (6.022 × 10²³)  

= 1.204 × 10²⁴ molecules.

Explanation

The total number of noble gases in the periodic table is 7:

• Helium (He),
• Neon (Ne),
• Argon (Ar),
• Krypton (Kr),
• Xenon (Xe),
• Radon (Rn),
• Oganesson (Og)