Sodium Hydride and Ionic Charges

The video tutorial explains how to write the formula for sodium hydride, NaH. It begins by identifying sodium as a metal and hydride as hydrogen bonded to a metal. The tutorial highlights that hydrogen typically has a +1 ionic charge, but when bonded to a metal, it has a -1 charge. Sodium, being in group one of the periodic table, has a +1 charge. The video explains that sodium hydride is neutral, meaning the charges balance to zero. The formula for sodium hydride is NaH, and the video concludes by reiterating the ionic charge of hydrogen when bonded to a metal.

What is the role of sodium in sodium hydride?

• It is not involved in the bonding.

• It provides a negative charge.

• It is a metal that bonds with hydrogen.

• It acts as a non-metal.

How does hydrogen behave when bonded to a metal like sodium?

• It retains a positive ionic charge.

• It does not form any ionic charge.

• It gains a negative ionic charge.

• It becomes neutral.

What is the ionic charge of sodium in sodium hydride?

• Zero

• Two plus

• One minus

• One plus

Why is sodium hydride considered a neutral compound?

• Because it has more negative charges.

• Because it has more positive charges.

• Because the charges of sodium and hydrogen cancel each other out.

• Because it does not have any charges.

What is the chemical formula for sodium hydride?

• H2Na

• NaH

• HNa

• NaH2

What happens to the ionic charge of hydrogen when it forms a hydride with a metal?

• It becomes neutral.

• It becomes one minus.

• It remains one plus.

• It becomes two plus.