S because As is not a non-metal
Halogens are a group of elements consisting of Fluorine, Chlorine, Bromine, Iodine and Astatine. In their ionic form, they have a superscript of -1, for example, chloride ion is Cl-1. These means that they readily accept one electron in order to achieve the Octet rule. The Octet rule states that each atom must contain 8 electrons in their valence shell for it to be stable. The most stable set of elements are the noble gases. Because they already fulfill the Octet rule, they no longer take part in reactions. Halogens are also very electronegative, meaning, they attract more electrons toward them. This is also a consequence of the Octet rule.
From the choices, the answers would be:
<span>they require only one electron to complete their outer shell
they have a high electronegativity</span>
B because ice water is water which molocules move fast like air
Answer:
The acid dissociation constant, _Ka__, is a quantitative measure of acid strength
Explanation:
Answer:
9.834 moles Cf.
Explanation:
The number of moles of a substance is an easy way to represents its amount. Avogadro has determined that the total amount in 1 mol is equal to 6.02x10²³(Avgadros' number), so 1 mol has 6.02x10²³ atoms, molecules, ions, or what we are measuring. So:
1 mol of Cf -------------------- 6.02x10²³ atoms
x -------------------- 5.92x10²⁴
By a simple direct three rule:
6.02x10²³x = 5.92x10²⁴
x = 5.92x10²⁴/6.02x10²³
x = 9.834 moles Cf
