Question

sad shayry,☹️☹️☹️☹️☹️☹️
कौन कहता है की आंसुओं में वजन नहीं होता,
एक भी गिर जाए तो मन हल्का हो जाता है।​

Answer 1

Explanation:

Grouping of elements into different classes is called periodic classification of elements. This method is requires arranging the elements that are alike and separating the elements that are unlike. It helps us understand how different elements form different compounds.