7a minus 2, if "3a-2" means 3a minus 2. 3a plus 1 and 1-3rd in parenthesis times 3a, if "3a-2" means 3a squared. a plus 3a squared plus 3a = 1-3rd times 3a plus 3a times 3a plus 1 times 3a = 3a plus 1 and 1-3rd in parenthesis times 3a
p=b+3a+c p-3a-c=b+3a-3a+c-c p-3a-c=b b=p-3a-c
Simplifying a = 3a + 12 Reorder the terms: a = 12 + 3a Solving a = 12 + 3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. a + -3a = 12 + 3a + -3a Combine like terms: a + -3a = -2a -2a = 12 + 3a + -3a Combine like terms: 3a + -3a = 0 -2a = 12 + 0 -2a = 12 Divide each side by '-2'. a = -6 Simplifying a = -6
(3 x 3) - 6 = 3 3a-6=3 3a=3+6 3a=9 a=9/3 a=3
3a - 7 = -28 Therefore, 3a = -21 a = -21/3 Therefore, a = -7
In group 3A elements, or elements in group 13, have only one unpaired electrons.
Thallium
Although boron is a metalloid and the other elements in group 3A of the Periodic Table are metals, it is placed with group 3A because it has three valence electrons at its highest-energy orbitals. It is also a good conductor of electricity.
Beryllium is the group 3A element with the highest ionization energy.
Group 3A is an old numbering system of the groups of the periodic table. Using the modern numbering system of the groups, you are referring to group 13. The element in group 13, period 6 is thallium (Tl).
Ununtrium (Uut)
No,but group 2 are alkaline earth elements
Boron is a Solid at room temperature, and it is a metalloid. Also it is in Group 3A, or Group 13
Boron has the highest ionisation potential among group IIIA elements.
3a^2 + 3a^2 = 6a^2 3a^2 - 3a^2 = 0 3a^2 x 3a^2 = 9a^4 3a^2 divided by 3a^2 = 1
7a minus 2, if "3a-2" means 3a minus 2. 3a plus 1 and 1-3rd in parenthesis times 3a, if "3a-2" means 3a squared. a plus 3a squared plus 3a = 1-3rd times 3a plus 3a times 3a plus 1 times 3a = 3a plus 1 and 1-3rd in parenthesis times 3a
a x a x a = a3