Answer:
D) The halogens tend to form 1+ ions.
Explanation:
A) Is correct because the atom gains an electron
B) Is correct because metals tends to lose electrons
C) Is correct because the atom loses an electron
D) Is incorrect because the halogens tends to gain electrones (1-)
E) Is correct because Nonmetals tend to form anions
Mass of X₄Z₅= 378.621 g
<h3>Further explanation</h3>
Given
3.89 x 10²³ molecules/formula units of X₄Z₅
Required
Mass of X₄Z₅
Solution
1 mol = 6.022 x 10²³ particles(molecules, atoms, ions)
N = n x No
No = Avogadro's number
n = mol
Conversion to mol :
n = N : No
n = 3.89 x 10²³ : 6.022 x 10²³
n = 0.646
MW X₄Z₅ :
= 4 x 76.15 + 5 x 56.3
= 304.6 + 281.5
= 586.1 g/mol
Mass :
= mol x MW
= 0.646 x 586.1
= 378.621 g
Answer:
Explanation: Over the course of a year, areas near Earth’s equator receive more direct energy from the Sun than areas near Earth’s poles. Which of the following correctly describes one result of this heating pattern?
Ionic compound
Al +3 charge, Aluminum
S -2 charge, Sulfur
Al2S3
