Question

1. explain your thinking. many chemical properties are determined by the number of valence electrons. elements with the same number of valence electrons will have similar properties. which element has similar properties to lithium? beryllium? explain:

Explanation:

Elements in the same group of the periodic table have the same number of valence - electrons and similar chemical properties. Lithium (Li) is in Group 1. Sodium (Na) is also in Group 1. Beryllium (Be) is in Group 2. So an element with similar properties to lithium is sodium.

Answer:

Which element has similar properties to lithium? Sodium
Beryllium? No
Explain: Lithium is in Group 1 of the periodic table. Elements in the same group have the same number of valence - electrons and similar chemical properties. Sodium is also in Group 1, while beryllium is in Group 2.