The electron configuration of element X is: 1s²2s²2p⁶3s²3p⁵

What is the formula of a compound formed when sodium reacts with element X?

Which

statement best explains the meaning of the term ‘

The electron configuration of element X is: 1s²2s²2p⁶3s²3p⁴

What is the formula of a compound formed when barium reacts with element X?

Select each of the types of product that are formed when an acid reacts with a metal

carbonate

Acids react with bases, such as group 1 metal hydroxides, to give a salt and water.

The equation shows nitric acid reacting with lithium hydroxide.

HNO₃ + LiOH → LiNO₃ + H₂O

True or false, the chemical equation shown above is balanced?

Select

each of the types of product that are formed when HCl(aq) reacts with NH

Acids react with bases, such as group 1 metal oxides, to give a salt and water.

The equation shows phosphoric acid reacting with rubidium oxide.

2H₃PO₄ + 3Rb₂O → 3Rb₃PO₄ + 2H₂O

True or false, the chemical equation shown above is balanced?