Alkali: Group 1(I A). Halogens: group 17 (VII A)
Answer:
The total number of electrons in a valence shell is called valence electrons. The electron configuration of rubidium shows that the last shell of rubidium has an electron. Therefore, the valence electrons of rubidium(Rb) are one.
Answer:
<h3>Energy is transferred from the hotter object to the cooler one, and the difference in temperature between them decreases.</h3>
Explanation