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(1) Predict the number of valence electron (2)What is the number of shells in Sr?(3)Arrange Be,Ca,Mg and Rb in the increasing order of size of their respective atoms.(4)Predict whether Ca is a metal of non metal(5)Which one of these elements has the largest atomic size?

Answer»

2.8.8.8.8.3) , valence electron is 3 2. Sr(2.8.8.8.8.4), valence is 43. Be, MG , ca, rb4. Ca is a METAL as it belongs to group 2 in the mordern PERIODIC table5.rbMark me as BRAINLIEST



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