Question

NAME THE FOLLOWING:

1. an element having four protons

2. an element having valency (-2)

3. an element having electronic configuration 2,8,1

4. an element whose latin name is kelium

5. an element whose latin name is netrium

6. an element containing 20 protons and 20 neutrons.

7. an element which is standard for measurnment of atomic mass.

Answer 1

1. an element having four protons – Beryllium (Be)

2. an element having valency (-2) – Oxygen (O)

3. an element having electronic configuration 2,8,1 – Sodium (Na)

4. an element whose latin name is kalium -- Potassium (K)

5. an element whose latin name is natrium – Sodium (Na)

6. an element containing 20 protons and 20 neutrons -- Calcium (Ca)

7. an element which is standard for measurnment of atomic mass – Carbon-12