Use the periodic table to find the name, atomic number, atomic mass, and the number of outermost electrons for each of the following elements: n, p, as, and sb.

From the question given, all element belong to the same group in the periodic table and there names are Nitrogen, Phosphorous, Arsenic and Antimony respectively.

Using the periodic table,

From the periodic table, the element N is called Nitrogen and it's atomic number is 7 atomic mass is 14, the number of outermost electron in N is 5.

For N

From the periodic table, the element P is called phosphorous and it's atomic number is 15, atomic mass is 30.97amu and it has 5 electrons on it's outer shell.

For P

From the periodic table, the element As is called Arsenic and it's atomic number is 33 and atomic mass is 74.92 amu and it has 5 outermost or valence electrons.

For As

From the periodic table, the element Sb is called Antimony and it's atomic number is 51 atomic mass is 121.76 amu and it has 5 valence electrons.

For Sb

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n- atmoic mass:14.0 atomic number:7  outermost:2

p- atomic mass:30.97 atomic number:15 outermost: 5

as- atm.mass:74.92 atm. num:33 outermost:3

Sb- atm.mass121.76 atm.num:51 outermost:4

Explanation:

when it gains or loses electrons