An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group? select one: a. 2a b. 3a c. 4a d. 5a e. 8a

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98