(b) A regular series of lines observed in the visible part of the emission spectrum of a cosmic star has the property that one of its emission lines coincides with the first line of the hydrogen Balmer series, and that every 5th, 10th, 15th, etc. line afterwards coincides with 2nd, 3rd 4th etc. line of the hydrogen Balmer series. Assuming that this particular series in the emission spectrum of the star can be associated with a hydrogen-like ion, what element would be responsible for the observed emission? What is the longest wavelength that can be found in this particular spectral series? Hint: the atomic number should give you a clue about the element in question.​

- 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

2b2t

explanation:

2b2t