Question

1. the table shows data for four elements in the same period: element valence electrons ion formed state at room temperature a 1 +1 solid b 2 +2 solid c 7 -1 gas d 8 rarely forms ions gas based on this data, which element would be classified as a metalloid? element a, because it forms a positive ion and is solid at room temperature element b, because it has properties between metals and non - metals in this period element c, because it changes from solid to gas state easily this period contains only metals and nonmetals, with no metalloids present

Explanation:

Metalloids have properties intermediate between metals and non - metals. Element A is a metal as it forms a + 1 ion and is solid at room temperature. Element C is a non - metal as it forms a - 1 ion and is a gas. Element D is a noble gas as it rarely forms ions. Element B has 2 valence electrons and forms a + 2 ion, and its properties could be intermediate in the period, which is characteristic of metalloids in some cases.

Answer:

Element B, because it has properties between metals and nonmetals in this period