Group 1 elements (usually called alkali metals) are not very electronegative and have small ionization energies due to that. The reason why they are not very electronegative is that they really want to loose their one valence electron so that they can have a noble gas electron configuration (completed octet).
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An acid is a molecule or ion capable of either donating a proton, known as a acid, or, capable of forming a covalent bond with an electron pair, The first category of acids are the proton donors.
Conduction electrons and positive metals ions
Answer:

Explanation:
The mass of the solute is given by the following expression:


We can use any solution containing chloride ions as NaCl solution or even dilute HCl due to mercurous Hg₂²⁺ is from group I cations which precipitated as chloride while Sr²⁺ is from group V
Net ionic equation:
Hg₂²⁺ + 2 Cl⁻ → Hg₂Cl₂ (white precipitate)
while SrCl₂ is soluble salt<span />