which metalloid has five valence electrons in the fourth electron shell?\nantimony\ngermanium\nselenium\narse…

which metalloid has five valence electrons in the fourth electron shell?\nantimony\ngermanium\nselenium\narsenic

which metalloid has five valence electrons in the fourth electron shell?\nantimony\ngermanium\nselenium\narsenic

Answer

Answer:

D. arsenic

Brief Explanations:

Arsenic (As) is a metalloid. Its electron - configuration shows it has 5 valence electrons in the fourth electron shell (4s²4p³). Antimony has 5 valence electrons but in the fifth shell. Germanium has 4 valence electrons in the fourth shell. Selenium is a non - metal and has 6 valence electrons in the fourth shell.