Question

Can you help me answer these 5 questions?

1. What is the correct electron configuration for the Mn²⁺ ion?

A. [Ar] 4s² 3d⁴ 4p⁴

B. [Ar] 4s² 3d³

C. [Ne] 3s² 3d⁴

D. [Ar] 3d⁵

E. [Ar] 4s² 3d⁹

2. Which of the following formulas is incorrect?

A. CaCO₃

B. CaBr

C. KOH

D. Na₂SO₄

E. Na₂O

3. Which of the following names are incorrect for the formula they're paired with? (Select ALLincorrect pairings)

A. NH₄F - ammonium fluoride

B. MgCl₂ - magnesium chloride

C. Ca(NO₃)₂ - monocalcium nitrate

D. NaCl - sodium monochloride

E. NaCN - sodium cyanide

4. How many metal cations will be in the correct formula unit for tin(IV) fluoride?

5. What is the correct name for the compound with the formula N₂O₅ ?

Answer 1

O Mnet total elections = 25-2= 23 electronic configuration 180 se- formula caBr is incorrect it should have happened Cabra so, option (6) is correct. (3) Naci - sodium monochloride (X) it should have happened chloride because both in equimolar sodium are present tin (Tv) fluorid = fofmula SnFy so One metal cation) is answer 6 N205 E dinitrogen pentoxide also known as nitrogen pentoxide