Acompound contains 0.5 mole of sodium , 0.5 mole of nitrogen , and 1.0 mole of hydrogen . the empirical formula of the compound isa nanhb na2nhc nanh2d na(nh)2

Answer : The empirical formula of the compound is, (c)

Solution : Given,

Moles of sodium, Na = 0.5 moles

Moles of nitrogen, N = 0.5 moles

Moles of hydrogen, H = 1.0 moles

Divide the each moles value by the smallest number of moles of given element.

The mole ratio of the elements are,

Na : N : H = 1 : 1 : 2

The mole ratio of the element is represented by the subscripts in the empirical formula.

The empirical formula is written as, or

Therefore, the empirical formula of the compound is, (c)

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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