Question

Answer the questions point wise (Each question of 2 marks)
State the Latin or Greek names and symbols of the elements as follows:
Sodium, Copper, Lead and Tungsten
Write names of the compounds with the following formulas:
(1) Al,(50.), (11) CaCl, (iii) K SO (iv) KNO,
What is an atomic number ? State its characteristics.
Label a, b, c and d. Given in Figure give the function of (b)
[1]​

Answer 1

Explanation:

sodium - Natrium

Copper - Cyprus

Lead - plumbum

Tungsten - Wolfram

Al - Aluminium

Cacl - calcium chloride

K2SO4 - pottasium sulphate

KNO3 - Pottasium nitrate

atomic number = number of protons in an element . It helps us to know the chemical properties of any element .