Question

Write the chemical symbols of 2 elements (E)
a) Which are formed from the first letter of elements name.
b) Whose names have been taken from the names of elements in Latin.
c) Which are formed from first two letters of the elements name.

need it fast ....

Answer 1

Answer:

(a) (i) C, N, O, etc.

(ii) Na, Fe, K, etc.

(b) Avogadro’s constant:

6.22 x 10^23 is defined as the Avogadro’s constant. It is the number of atoms in exactly 12 g of carbon-12.

Molar mass: Mass of 1 mole of a substance.