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  2. Block (periodic table) - Wikipedia

    en.wikipedia.org/wiki/Block_(periodic_table)

    The p orbital can hold a maximum of six electrons, hence there are six columns in the p-block. Elements in column 13, the first column of the p-block, have one p-orbital electron. Elements in column 14, the second column of the p-block, have two p-orbital electrons. The trend continues this way until column 18, which has six p-orbital electrons.

  3. Federal Board of Intermediate and Secondary Education

    en.wikipedia.org/wiki/Federal_Board_of...

    The FBISE was established under the FBISE Act 1975. [2] It is an autonomous body of working under the Ministry of Federal Education and Professional Training. [3] The official website of FBISE was launched on June 7, 2001, and was inaugurated by Mrs. Zobaida Jalal, the Minister for Education [4] The first-ever online result of FBISE was announced on 18 August 2001. [5]

  4. Army Public Schools & Colleges System - Wikipedia

    en.wikipedia.org/wiki/Army_Public_Schools...

    Army Public Schools & Colleges System (APSACS) is a school system operated by the Pakistani Army with over 230 branches. APSAC System operates in 18 regions across Pakistan, with supervision by 18 regional directors. [1]

  5. Group 12 element - Wikipedia

    en.wikipedia.org/wiki/Group_12_element

    Group 12, by modern IUPAC numbering, [1] is a group of chemical elements in the periodic table. It includes zinc (Zn), cadmium (Cd), mercury (Hg), [ 2 ] [ 3 ] [ 4 ] and copernicium (Cn). [ 5 ] Formerly this group was named IIB (pronounced as "group two B", as the "II" is a Roman numeral ) by CAS and old IUPAC system.

  6. Block design - Wikipedia

    en.wikipedia.org/wiki/Block_design

    A partially balanced incomplete block design with n associate classes (PBIBD(n)) is a block design based on a v-set X with b blocks each of size k and with each element appearing in r blocks, such that there is an association scheme with n classes defined on X where, if elements x and y are ith associates, 1 ≤ i ≤ n, then they are together ...

  7. Grading systems by country - Wikipedia

    en.wikipedia.org/wiki/Grading_systems_by_country

    The most common scale is now 1 to 7, with 9 being the highest grade obtained. In addition, degrees are awarded in a Class, depending on the grades received. Degrees may be awarded in the First Class, Second Class (Upper Division), Second Class (Lower Division), Third Class, and Pass Class. Grading scales for secondary certificates are standard.

  8. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Time-keeping on this clock uses arithmetic modulo 12. Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus.

  9. Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia

    Wikipedia [c] is a free-content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.