Describe and explain the possible effect on your results of the following experimental errors. A) You allowed your chromatogram to develop too long, and you couldn't find the solvent front.
B) The lab assistant who prepared the developing solvent mistakenly used aqueous amine nia in place of acetic acid.
C) You used an open ended melting po! capillary rather than a Drummond Microcap to apply the spots.
D) You marked the starting line with a ballpoint pen.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms