Question

the electron dot diagram shows the arrangement of dots without identifying the element. which element’s symbol could replace the question mark in the diagram? carbon (c) tellurium (te) beryllium (be) cesium (cs)

Explanation:

Step1: Count valence electrons in diagram

The electron dot diagram has 6 dots, so valence electrons = 6.

Step2: Check valence electrons of options

Carbon (C): 4; Tellurium (Te): 6; Beryllium (Be): 2; Cesium (Cs):1.

Step3: Match valence electrons

Tellurium has 6 valence electrons, matching the diagram.

Answer:

B. tellurium (Te)