Which option correctly describes the pattern of reactivity and electronegativity in nonmetals?
Both reactivity and electronegativity decrease down a group.
Reactivity decreases down a group, and electronegativity increases down a group.
Reactivity increases down a group, and electronegativity decreases down a group.
Both reactivity and electronegativity decrease up a group.
1: Valence electrons and electronegativity.
2: Both reactivity and electronegativity decrease down a group.
3: Electronegativity decreases down a group, and reactivity increases down a group.
4: The number of valence electrons increases from left to right.
5: Cs.
100%
No one
No one I love you so much you deserve the world
literally love this guy. no one is correct
Macroscopic Patterns of Reactivity Quick Check.!!! 100%
1.valence electrons and electronegativity
2. Both reactivity and electronegativity decrease down a group.
3. Electronegativity decreases down a group, and reactivity increases down a group.
4. The number of valence electrons increases from left to right.
5. Cs
No one is fully correct for macroscopic patterns of reactivity quick check in chemistry in connexus.
No one is 100% correct!
To determine the correct option, we need to understand the patterns of reactivity and electronegativity in nonmetals.
Reactivity refers to how easily an element will undergo a chemical reaction. In general, reactivity decreases down a group in the periodic table. This is because the outermost energy level (valence shell) of nonmetals becomes further away from the nucleus as you go down a group. As a result, the attraction between the valence electrons and the nucleus weakens, making it less likely for nonmetals to react with other substances.
Electronegativity, on the other hand, refers to the ability of an atom to attract electrons towards itself when it is chemically bonded to another atom. Electronegativity generally increases across a period from left to right in the periodic table. This is because, as you move to the right, the number of protons in the nucleus increases, leading to a greater positive charge. As a result, atoms become more attractive to electrons, thus increasing electronegativity.
Now, let's consider the options:
Option 1: "Both reactivity and electronegativity decrease down a group." This statement is incorrect because while reactivity does decrease down a group, electronegativity actually increases down a group.
Option 2: "Reactivity decreases down a group, and electronegativity increases down a group." This is the correct option as it accurately describes the patterns. Reactivity indeed decreases down a group, and electronegativity increases down a group.
Option 3: "Reactivity increases down a group, and electronegativity decreases down a group." This statement is incorrect because reactivity actually decreases down a group, not increases.
Option 4: "Both reactivity and electronegativity decrease up a group." This statement is incorrect because reactivity decreases up a group, but electronegativity increases up a group.
So, the correct option is:
Reactivity decreases down a group, and electronegativity increases down a group.
Macroscopic Patterns of Reactivity Quick Check.!!! 100%
1.valence electrons and electronegativity
2. Both reactivity and electronegativity decrease down a group.
3. Electronegativity decreases down a group, and reactivity increases down a group.
4. The number of valence electrons increases from left to right.
5. C is definitely incorrect
Think about the halogens.
F is the most electronegative element in the periodic table. Among halogens it is the most reactive. I is less reactive and less electronegativity.