Advertisements
Advertisements
Question
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Solution
‘An atom is the basic unit of an element’.
An atom of fluorine [At. No. 9]
\[\ce{\underset{\text{[atomic no.]}}{Z} = \underset{\text{[no. of protons]}}{P} = \underset{\text{[no. of electrons]}}{e}}\]
APPEARS IN
RELATED QUESTIONS
Give Two Examples for Each of the Following: Metalloids
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Name: a Liquid Metal
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
Select the correct answer from the choice given below.
An impure substance
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
Give an example of two liquids that form heterogeneous – mixtures.
Give an example for the elements derived from their Latin names.
Differentiate metals and non-metals.
