Question

2 multiple choice 20 points which group of elements have similar chemical properties? b, ga, and si co, ni, and cu be, mg, and ca you cant use the periodic table to determine which elements have similar chemical reactivity. 3 multiple answer 20 points based on the location of sodium on the periodic table, which of the following elements share similar properties with sodium. select all correct answers

Explanation:

Elements in the same group (vertical column) of the periodic table have similar chemical properties.

• For question 2:
• B (Boron) is in group 13, Ga (Gallium) is in group 13, and Si (Silicon) is in group 14.
• Co (Cobalt) is in group 9, Ni (Nickel) is in group 10, and Cu (Copper) is in group 11.
• Be (Beryllium), Mg (Magnesium), and Ca (Calcium) are all in group 2 (alkaline earth metals), so they have similar chemical properties.
• For question 3 (assuming the full options are known that elements in group 1 like Li, K, etc. would be correct as Sodium (Na) is in group 1). But since only Be is partially shown (Be is in group 2, so it's incorrect for sharing properties with Na which is in group 1).

Answer:

Question 2: Be, Mg, and Ca.
Question 3: (If full options of group 1 elements like Li, K are present) Li, K (but based on the partial info given, if only Be is considered from the shown part, it's incorrect. Need full options for precise multiple - answer selection).