This chart lists four elements from the periodic table. atoms from which two elements would form ionic bonds? a.  calcium and gold. b. gold and argon. c. argon and iodine.  d. iodine and calcium

d. iodine and calcium

Explanation: Ionic bonds are formed by transfer of electrons between metal and non metals.

Covalent bonds are formed by sharing of electrons between non metals

Electronic configuration of calcium:

Calcium atom will lose two electron to gain noble gas configuration and form calcium cation with +2 charge.

Electronic configuration of iodine:

Iodine atom will gain one electron to gain noble gas configuration and form iodide ion with -1 charge.

In calcium iodide the one electron from calcium metal gets transferred to iodine atom and thus form an ionic bond to give

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

answer: mercury

explanation: