Ans. According to the Modern Periodic Table, elements having similar valence electron configuration are placed in one group. This is because they ... What, if anything, do their atoms have in common? Ans. (a) Yes, lithium, sodium and potassium all have one electron in their outermost shell. (b) The common ... (e) twice as many electrons in its second shell as there are in its first shell? Ans. (a) Neon hasanbsp;...
|Title||:||Longman Science Chemistry 10|
|Publisher||:||Pearson Education India - 2008-09-01|