Which statement is true? 1. The electronegativity of an atom depends only on the value of the ionization energy of the atom. 2. Atoms with high ionization energies and high electron affinities are highly electronegative. 3. Atoms with low ionization energies and low electron affinities have high electronegativities. 4. The electronegativity of an atom is defined as 1 2 (Electron Affinity) of the atom. 5. Atoms with high ionization energies and high electron affinities have low electronegativities.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

bcde is the incorrect answer it is a

answeridentity;