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༒ Bʀᴀɪɴʟʏ Sᴛᴀʀs

༒Mᴏᴅᴇʀᴀᴛᴇʀs

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How many times to practice NCERT Maths book?
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Answer 1

Answer:

.Magnesium oxide, or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium. It has an empirical formula of MgO and consists of a lattice of Mg²⁺ ions and O²⁻ ions held together by ionic bonding. 

Answer 2

Answer:

you should do each and every sum 4 or 5 times to learn method When i was having board i practice the math every day new new questions and revice all in Sunday