Read the following Paragraphs and answer the following Questions Teamwise

A chemical element is a pure substance which is composed of a single type of atom, characterized by its particular number of protons in the nuclei of its atoms, known as the atomic number and represented by the symbol Z. The mass number is the sum of the number of protons and neutrons in a nucleus. Although all the nuclei of all atoms belonging to one element will have the same atomic number, they may not necessarily have the same mass number; atoms of an element which have different mass numbers are known as isotopes. For example, all atoms with 6 protons in their nuclei are atoms of the chemical element carbon, but atoms of carbon may have mass numbers of 12 or 13.

The standard presentation of the chemical elements is in the periodic table, which orders elements by atomic number. The periodic table is arranged in groups, or columns, and periods, or rows. The periodic table is useful in identifying periodic trends.

(Start Quiz) Team 1

Country Wise Quizzes:

Afghanistan Albania Algeria Andorra Angola Anguilla Antigua & Barbuda Argentina Armenia Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia & Herzegovina Botswana Brazil Brunei Darussalam Bulgaria Burkina Faso Myanmar Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Colombia Comoros Congo Costa Rica Croatia Cuba Cyprus Czech Republic Denmark Djibouti Dominican Republic Dominica Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Fiji Finland France French Guiana Gabon Gambia Georgia Germany Ghana Great Britain Greece Grenada Guadeloupe Guatemala Guinea Guinea-Bissau Guyana Haiti Honduras Hungary Iceland India Indonesia Iran Iraq Israel Italy Ivory Coast Jamaica Japan Jordan Kazakhstan Kenya Kosovo Kuwait Kyrgyz Republic Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Republic of Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Martinique Mauritania Mauritius Mayotte Mexico Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Namibia Nepal Netherlands New Zealand Nicaragua Niger Nigeria North Korea Norway Oman Pacific Islands Pakistan Panama Papua New Guinea Paraguay Peru Philippines Poland Portugal Puerto Rico Qatar Reunion Romania Russian Federation Rwanda Saint Kitts and Nevis Saint Lucia Saint Vincent's & Grenadines Samoa Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Slovakia Slovenia Solomon Islands Somalia South Africa South Korea South Sudan Spain Sri Lanka Sudan Suriname Swaziland Sweden Switzerland Syria Tajikistan Tanzania Thailand Timor Leste Togo Trinidad & Tobago Tunisia Turkey Turkmenistan Turks & Caicos Islands Uganda Ukraine United Arab Emirates USA Uruguay Uzbekistan Venezuela Vietnam Virgin Islands (UK) Virgin Islands (US) Yemen Zambia Zimbabwe

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Subject Wise Quizzes:

Anthropology Sociology Psychology Economics Political Science Geography Environmental Science Physics Chemistry Botany Zoology Agriculture Commerce Geology

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