AL 34. The electrons in the atoms of four elements A, B, C and D are distributed in three shells having 1,
3,5 and 7 electrons respectively in their outermost shells. Write the group numbers in which these
elements are placed in the Modern Periodic Table. Write the electronic configuration of the atomsof B and D and the molecular formula of the compound formed when B and D combine.
how write molulecular formula. how the compound us made.
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Using a Molecular Formula to Determine Which Elements are Present in a Molecule. Step 1: Write the molecular formula for the molecule: X a Y b: a and b are both numbers X and Y are both letters Step 2: Separate the chemical symbols for each element in the molecular formula by substituting the word "and" for each subscript number:
Explanation:
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