Review the families and classification of elements in the periodic table. Based on this information, you would expect elements to the left of the stair-step line in the periodic table to form ions and have valence electron(s).
A) positive; 1
B) negative; 4 - 7
C) positive; four or less
D) negative; three or less

A.

Explanation:

They lose 1 electrons in their outermost shell.

The proton to electron ratio become unbalanced where the proton overpowers.

Therefore, leaving the ion positively charged.

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .