Gwhat is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields. e⃗ and b⃗ are also perpendicular to each other and have magnitudes 3700 v/m and 3.5×10−3 t , respectively.

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.