Chemistry unknown ion problem?!

[From: ] [author: ] [Date: 11-09-07] [Hit: ]

?A compound contains an unknown ion X and has the formula XCl2. Ion X contains 20 electrons.What is the identity of X?-atomic number 20 is Ca.So this fits the formula rather well CaCl2The number of electrons in an atom equals the number of protons.......

Can anyone please help me with this problem?!?

A compound contains an unknown ion X and has the formula XCl2. Ion X contains 20 electrons.

What is the identity of X?

-

atomic number 20 is Ca. So this fits the formula rather well CaCl2 The number of electrons in an atom equals the number of protons.

-

a neutral atom contains the same number of electrons and protons
so
the atomic number of X is 20
X is Calcium and CaCl2 is consistent with the given information

1

keywords: problem,ion,unknown,Chemistry,Chemistry unknown ion problem?!

New

Hot