Abirami B.

Hai Sireesha,,

Tamil and Telugu are mostly similar. I am a Tamilian and I can easily understand Telugu, yet not fluent at speaking. I can understand Telugu words by observing and listening to people who speak Telugu. How they pronounce the words and when they use which word! If you don't have Tamil friends in your locality, you can always watch Tamil movies to learn the language.

Electrons are not present inside the nucleus of the atom. The nucleus is made of proton and neutrons whereas the electrons revolve around the nucleus inside the atom.

For the formation of beta rays, it emerges from the nucleus. This radiation happens in the nucleus when the neutrons are more compared to protons in the nucleus (remember: protons and neutrons are of equal numbers inside the nucleus in a standard atom). So the extra neutrons present in the nucleus turns itself into a proton and electron. So, that's how you end up having electrons in the nucleus. Since electrons does not belong to the nucleus they emerge out as beta radiation.

Hello, Ashwin! Remembering the periodic table is one of the important steps for preparing for any chemistry examination. Before, remembering the elements try to quickly analyze and understand the abbreviation of the elements. For instance, if we take Calcium (Ca) whereas Copper (Cu), Cobalt (Co), and Chromium (Cr). It might confuse sometimes us when we are solving the questions. And about remembering the periodic table, remember the first 30 mandatory and rest based on the need. But if you are preparing for competitive exams, then it's better to memorize the whole table. Even if you are not able to memorize the whole, analyze the previous year's question and memorize the most important and frequently asked sections of the periodic table.