Answer to Question #118403 in General Chemistry for Saladus

Question

1. Align the elements in the direction of increasing metallicity.
a) K, Cu, Ca
b) Rb, Cs, Li.
Justify your decision.



2. Align the following acids to increase strength:
H2SO4, H3PO4, H4SiO4



3. What are the min. and max. o.-a. values ​​for the following elements: Ca, Mn, I?



4. The electron formula is 1s22s22p63s23p4
Draw a square diagram.

In what period and group is this element located?
Find the number of neutrons in the nucleus of an atom.
Write the formula of the oxide corresponding to the highest o.-a and the reaction of this oxide with water
the formula of the base or acid formed.

5. Draw an electron shell diagram and electron formula for sodium ion.
Which atom's atom or which ions with a + or - sign also have such an electron shell?

Answer 1

Cu, Ca, K

Li, Rb, Cs

the elements electronegativity increases across the period and decreases down the group