CrossChemAU4TestReview2024

Front

What do Li, Na, K, and Rb have in common?

Back

They all have +1 ions, strong reactions with water, and 1 valence electron.

Front

In the compound SrF2, what happens to strontium and fluorine atoms?

Back

Strontium atoms lose electrons and fluorine atoms gain electrons.

Front

What is the chemical formula for the compound composed of Na+ and CO3^2- ions?

Back

Na2CO3.

Front

What is the electron configuration for Indium (In)?

Back

[Kr] 5s2 4d10 5p1.

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are in the nucleus, while electrons are outside.

Front

What is the charge of a sodium ion (Na+)?

Back

+1.

Front

What is the charge of a carbonate ion (CO3^2-)?

Back

-2.

Front

How many valence electrons does potassium (K) have?

Back

1 valence electron.

Front

What type of bond is formed between Na+ and Cl- in NaCl?

Back

Ionic bond.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with others.