Si: [He]2s22p63s23p5 [Ar]4s24p5 [Ne]3s23p2 [Ne]3s23p4

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8