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Chemistry: Barium- Using the periodic table how do I know the number of protons, neutrons, electrons, and mass?
I am brand new to Chemistry and in 101 and have a teacher who apparently believes in the self taught 'method' of learning. We have a test coming up and I am trying to teach myself everything on his review sheet for the test. Can someone tell me how I read a periodic table to know the answers to the questions posted. PLEASE Were just given the atomic number and he wants us to know the symbol, number of protons, number of neutrons, number of electrons, and the mass number. I am using atomic number 56 first which is Barium. We have to know alot of these and i'm not sure where to get the answers.Mendeleev's periodic table?
In his periodic table, Mendeleev placed Be, Mg, Zn, and Cd in one group and Ca, Sr, Ba, and Pb in another. Why did he group the elements this way?How did Dmitri Mendeleev drew a table even after taking periodic masses as the basis ?
i mean how come he forecasted future elements nd was so sure about them even after taking wrong basis for his periodic table ?????????What is the mass of Ba?
A chemical bottle containing BaSO4 is 98.7 pure. What mass of Ba is present in 162 g of this chemical? Please show me the steps/how you got the answer? Please show the steps clearly.How long did it take dmitri mendeleev (the creator of the periodic table) to get the periodic table right?
eh, for science i have to do five essays on five different scientists. dmitri is one of the scientists i'm going to do an essay on. & the main topic is the periodic table. so how long did it take him to get it right? thankyou so much if you can help me. :.
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