which of the following is true for atoms? a. light is releasedwhen electrons in

Question

which of the following is true for atoms? a. light is releasedwhen electrons in atoms move from higher energy levels.  b.the line-emission spectrum of a given kind of atom is unique tothe kind of atom. c. both a and b       d. neithera nor b according to the law of definite composition, any two samplesof KCl will have _____. a. the same mass   b. the same density  c. slightly different molecular strutures   d. the sameration of elements an electron for which n=4 has more ____ than an electron forwhich n=2. a. spin   b. stability   c.energy     d. wave nature which of the following is true for atoms? a. light is releasedwhen electrons in atoms move from higher energy levels.  b.the line-emission spectrum of a given kind of atom is unique tothe kind of atom. c. both a and b       d. neithera nor b according to the law of definite composition, any two samplesof KCl will have _____. a. the same mass   b. the same density  c. slightly different molecular strutures   d. the sameration of elements an electron for which n=4 has more ____ than an electron forwhich n=2. a. spin   b. stability   c.energy     d. wave nature

Explanation / Answer

c. both a and b are true statements,if by light they mean electromagnetic energy and not just visiblelight the law of definite composition means just what its nameimplies - that any compound will have a definite composition,regardless of the source...so d. is the correctanswer - that a compound will have the same ratio ofelements an electron for which n = 4 is an electron in a higherprinicpal energy level, and thus has c. moreenergy that one with n = 2

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