(a) True or false: An element’s number of valence electrons is the same as its atomic number.

(b) How many valence electrons does a nitrogen atom possess?

Solutions

Expert Solution

(a) False. Because atomic number indicates all the electrons of an element but valence electrons represent only electrons in the outer most shell only.

(b)

N (Z = 7) E.C is 1s2 / 2s2 2p3

second shell is valence shell and it has 5 electrons. SO, number of valence electrons in N = 5

(c)

There are 4 valence electrons. Because 3rd orbit is the lastorbit.

queen_honey_blossom answered 1 year ago

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