Explanation

Explanation

 The correct spelling of the ocean's name is Pacific.

Explanation

Fadodil (correctly spelled Daffodil) is a type of flower, just like a rose is a type of flower.

Explanation

• Fluorine is the most electronegative element (3.98 on the Pauling scale).
• 7 valence electrons (2s² 2p⁵); needs one more for a stable noble gas configuration
• Small atomic radius → strong pull on bonding electrons
• High effective nuclear charge

Explanation

Limestone consists of calcium carbonate,

which has the chemical formula CaCO3.

Calcium carbonate is a chemical compound.

It is a common substance found in rocks as the minerals calcite.

Explanation

Potassium is the chemical element.

Symbol: K 

Atomic number: 19

Electron configuration: 4s1

Electrons per shell: 2, 8, 8, 1

Explanation

. 2.6  (rounded to 1 decimal place)

Explanation

Given matrix A = [1 0, 0 1]:

This is a Unit matrix or Identity matrix, where all elements on the main diagonal are 1, and the rest are 0.

Explanation

18 multiplied by 7 equals 126.

Explanation

The Solvay process is an industrial process that uses limestone (CaCO3 )

to produce carbon dioxide (CO2 )

which reacts with ammonia (NH3 )

dissolved in brine (concentrated NaCl(aq)) to produce sodium carbonate.

ND-7-5-2023