HELP ME PLEASE URGENT: 1. What can be concluded about the properties of the elements that border this staircase on the Periodic Table of the Elements?
A. These elements are metals.
B. These elements are liquids.
C. These elements have properties of both solids and gases.
D. These elements have properties of both metals and nonmetals.

2.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

How many peaks will be present in a mass spectrum for brcl?

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid