Nadia009876 Nadia009876

05-04-2017
Chemistry

contestada

Why is aluminium in group 3 of the periodic table?

Respuesta :

tadhyatt tadhyatt

05-04-2017

Because it contains 3 valiance electrons.

Answer Link

annastasia annastasia

05-04-2017

aluminum has an atomic number 13

electronic configuration= 2,8,3

we know
period number signifies the number of orbits in an atom.

aluminum has 3 orbits
therefore AL is in period 3

Answer Link

Otras preguntas

Column headings in a report are based on (Points : 4) the captions used in the source table or query. the text controls you place in a report.

Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in

The following sequences of reactions occurs in the commercial production of aqueous nitric acid: 4NH3 + 5O2 -> 4NO + 6H2O H= -907kJ 2NO + O2 -> 2NO2

Which of the following positions is responsible for the oversight, strategy formulation, and guidance at a large corporation? a. CEO b. Company President c.

How do personal struggles define the character

As a result of cash flow shortages, Millard's Department Stores has fallen behind in payments to suppliers. Some suppliers are withholding shipments to Millard'

12=2+Z/-6 solve the equation

Given the blood values pH = 7.31, PCO2 = 63 mmHg, and HCO3 = 30 mEq/L, it would be accurate to conclude that Select all that apply a. the patient exhibits respi

Which is a correct first step for solving this equation? X+7=2x+5-4x

Which of the following is a valid variable name? 1. three com 2. 3com 3. 3 com 4. ampersand&

Q&A Education