Examlex
Which of the following is amphoteric?
Equation
A mathematical statement that asserts the equality of two expressions, signified by the symbol =.
Center
In geometry, the midpoint or origin point of a shape or object, often relevant in circles, ellipses, and other symmetrical shapes.
Center
The point that is equally distant from all points on the circumference of a circle or sphere.
Radius
The length measured from a circle's midpoint to any location along its outer edge.
Q37: Which element is in a family that
Q39: Both gypsum and plaster of Paris contain
Q40: Complex-ions in which ligands are interchanged very
Q44: In diborane,B<sub>2</sub>H<sub>6</sub>,the hybridization of each boron is:<br>A)sp<sup>3</sup><br>B)sp<sup>2</sup><br>C)sp<sup>3</sup><sup>d</sup><br>D)sp<br>E)sp<sup>3</sup><sup>d</sup><sup>2</sup>
Q45: Order the following compounds from acidic to
Q59: Determine the K<sub>sp </sub>at 25 °C of
Q83: Which of the following oxides is neither
Q98: In the group of elements Cr,Ni,Sn,Pt,Ti,the one
Q99: Compounds I)to V)are all cyclic compounds.How many
Q107: Write the electron configuration for Co<sup>3+</sup>.<br>A)[Ar]3d<sup>6 </sup><br>B)[Ar]4s<sup>2</sup>3d<sup>4