Explain the similarities and differences between a 1M solution of NaOH and a 1m solution of NaOH

(notice the M and m)

Similarity - 1 mol of NaOH in 1M and 1m.

Difference - 1M - 1 mol NaOH in 1L solution,

1m - 1 mol NaOH in 1000g solvent (water).

Explanation:

M - Molarity,  the number moles of solute are dissolved in 1 L of solution.

m - Molality is the number of moles of solute per 1 (kg) kilogram = 1000 g of solvent.

Similarity - 1 mol of NaOH in 1M and 1m.

Difference - 1M - 1 mol NaOH in 1L solution,

1m - 1 mol NaOH in 1000g solvent (water).

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.