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1. ### in which group do all the elements have the same number of electrons in the outermost principal energy level ?

I would go for 18(0)

2 Answers · Science & Mathematics · 20/08/2010

2. ### I don't get this, can sobody help me? thanks a lot...?

the s block is group 1 and 2. the alkali metals are one s electron in the outer shell. the alkaline earth metals are two s in the outer shell. group 3-12 are transition metals and the d block. group number us the sum of the outermost s a d electrons. p...

1 Answers · Science & Mathematics · 17/09/2011

3. ### Nomenclature of Nitrogen group (IVA) anions?

Nitrate is NO3- where nitrogen is +5 and each O is -2. So, 5 + 3(-2) = -1. PO4 is called phosphate and it has a -3 charge because P is +5 and each O is 2-. 5 + 4(-2) = -3. Same goes...

1 Answers · Science & Mathematics · 09/07/2010

4. ### can someone check my work? Periodic table trends:?

1) a. ok b. ok c) ok d) Ge e) ok 2) a. Cl b) ok c) ok d) ok e) Cl (Al is a metal)

1 Answers · Science & Mathematics · 31/01/2013

5. ### why group IVA has giant covalent structure?

The elements in group 4A, especiallly C and Si are at a mid range position regarding electronegativity, so they tend to share electrons instead of donating or accepting electrons, making for covalent...

1 Answers · Science & Mathematics · 10/06/2010

6. ### Which group of elements will most likely form a covalent bond?

Group IVA, also known as Group 14.

1 Answers · Science & Mathematics · 09/06/2010

7. ### what is the charges of the 8 groups on the periodic table?

... become positively charged i.e., cations. b) Group IVA, VA, VIA and VIIA consist of non-metals of normal ...

1 Answers · Science & Mathematics · 28/04/2010

8. ### Does the atom carbon have 4 electrons in its valence or 6 in 2 valences? I'm getting conflicting repsonses.?

...periodic table rows under IIIA have 3 valence electron, rows under IVA have 4 valence electron......etc.

2 Answers · Science & Mathematics · 30/03/2013

9. ### Doping N-type & P-type semiconductors?

n-type dopants include phosphorus, arsenic, and antimony, mixed into such elements as silicon, germanium, and tin. Answer: b (since arsenic is in Group VA). p-type dopants include boron and aluminum, mixed into such elements as silicon or...

4 Answers · Science & Mathematics · 18/03/2010

10. ### how to write a chemical formula???

...you (except for a few exceptions). IIIA have +3 charges. IVA has +/- 4 Charges. VA has -3 charges, ...

2 Answers · Science & Mathematics · 31/03/2010