Elementul cu numărul de masă 27, are 3 electroni pe stratul M. Se cere: a. poziţia elementului în tabelul periodic;
b. denumirea elementului;
c. numărul de neutroni.

the answer to this question is 3.

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.

answer seismograph;