When an alkali metal is involved in a chemical reaction with a nonmetal, what charge will its atoms most likely form? 1- 2+ 1+ 2-

  The charge that  alkali metal   form  when they  involve in a chemical reaction with non metals  is  1+

 Explanation

Metals react   by   losing  electron to form a positively charged   ion.

 Alkali metal   has   1  electron  in outermost   sub shell  which  is donated  when they react with non metals  to form  ions with a charge of 1+.

For example sodium (Na)  metal with [Ne] 3S¹   electron configuration   donate  the  1 electron   in outermost subshell (3S) to form Na⁺ ion.

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